diff --git a/rowers/courseutils.py b/rowers/courseutils.py
index d864e372..32b38eb1 100644
--- a/rowers/courseutils.py
+++ b/rowers/courseutils.py
@@ -40,23 +40,23 @@ def time_in_path(df,p,maxmin='max',getall=False,name='unknown',logfile=None):
     if len(df[b==2]):
         if logfile is not None:
             t = time.localtime()
-            timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-            with open(logfile,'a') as f:
-                f.write('\n')
+            timestamp = bytes('{t}'.format(t=time.strftime('%b-%d-%Y_%H%M', t)),'utf-8')
+            with open(logfile,'ab') as f:
+                f.write(b'\n')
                 f.write(timestamp)
-                f.write(' ')
-                f.write(name)
-                f.write(' ')
-                f.write(maxmin)
-                f.write(' ')
-                f.write(str(getall))
-                f.write(' ')
-                f.write(str(len(df[b==2])))
-                f.write(' ')
+                f.write(b' ')
+                f.write(bytes(name,'utf-8'))
+                f.write(b' ')
+                f.write(bytes(maxmin,'utf-8'))
+                f.write(b' ')
+                f.write(bytes(str(getall),'utf-8'))
+                f.write(b' ')
+                f.write(bytes(str(len(df[b==2])),'utf-8'))
+                f.write(b' ')
                 if len(df[b==2])>1:
-                    f.write(' passes found')
+                    f.write(b' passes found')
                 else:
-                    f.write(' pass found')
+                    f.write(b' pass found')
         if getall:
             return df[b==2]['time'],df[b==2]['cum_dist']
         else:
@@ -64,20 +64,20 @@ def time_in_path(df,p,maxmin='max',getall=False,name='unknown',logfile=None):
 
     if logfile is not None:
         t = time.localtime()
-        timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-        with open(logfile,'a') as f:
-            f.write('\n')
+        timestamp = bytes('{t}'.format(t=time.strftime('%b-%d-%Y_%H%M', t)),'utf-8')
+        with open(logfile,'ab') as f:
+            f.write(b'\n')
             f.write(timestamp)
-            f.write(' ')
-            f.write(name)
-            f.write(' ')
-            f.write(maxmin)
-            f.write(' ')
-            f.write(str(getall))
-            f.write(' ')
-            f.write(str(len(df[b==2])))
-            f.write(' ')
-            f.write(' pass not found')
+            f.write(b' ')
+            f.write(bytes(name,'utf-8'))
+            f.write(b' ')
+            f.write(bytes(maxmin,'utf-8'))
+            f.write(b' ')
+            f.write(bytes(str(getall),'utf-8'))
+            f.write(b' ')
+            f.write(bytes(str(len(df[b==2])),'utf-8'))
+            f.write(b' ')
+            f.write(b' pass not found')
     raise InvalidTrajectoryError("Trajectory doesn't go through path")
 
 
diff --git a/rowers/garmin_stuff.py b/rowers/garmin_stuff.py
index 9e9502a1..3ce43ebf 100644
--- a/rowers/garmin_stuff.py
+++ b/rowers/garmin_stuff.py
@@ -135,7 +135,6 @@ def garmin_getworkout(garminid,r,activity):
         offset = activity['startTimeOffsetInSeconds']
     except KeyError:
         offset = 0
-    print(offset)
     durationseconds = activity['durationInSeconds']
     duration = dataprep.totaltime_sec_to_string(durationseconds)
     activitytype = activity['activityType']
diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 0ea08a8b..be22200f 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -193,6 +193,7 @@ def interactive_hr_piechart(df,rower,title,totalseconds=0):
     qry = 'hr < {ut2}'.format(ut2=rower.ut2)
     frac_lut2 = totalseconds*df.query(qry)['deltat'].sum()/sumtimehr
 
+
     qry = '{ut2} <= hr < {ut1}'.format(ut1=rower.ut1,ut2=rower.ut2)
     frac_ut2 = totalseconds*df.query(qry)['deltat'].sum()/sumtimehr
 
diff --git a/rowers/plannedsessions.py b/rowers/plannedsessions.py
index 709ccf1d..326b02d3 100644
--- a/rowers/plannedsessions.py
+++ b/rowers/plannedsessions.py
@@ -1385,7 +1385,7 @@ def default_class(r,w,race):
                 adaptiveclass=adaptiveclass,
                 boattype=boattype,
                 ).order_by(
-                    "agemax","-agemin","boattype","sex","weightcategory",
+                    "agemax","-agemin","boattype","sex","weightclass",
                     "referencespeed"
                     )
             if standards.count()==0:
@@ -1394,7 +1394,7 @@ def default_class(r,w,race):
                     boattype=boattype
                     ).order_by(
                     "agemax","-agemin","boattype","sex",
-                    "weightcategory","referencespeed")
+                    "weightclass","referencespeed")
                 if standards.count()==0:
                     standards = CourseStandard.objects.filter(
                         agemin__lt=age,agemax__gt=age
@@ -1404,15 +1404,15 @@ def default_class(r,w,race):
 
             if standards.count()==0:
                 # boolean, boattype, boatclass, adaptiveclass, weightclass, sex, coursestandard,
-                return False,'1x','water',None,'hwt','male',None
+                return False,'1x','water',None,'hwt','male',5.0,None
 
         if standards.count()>0:
             # find optimum standard
             s = standards[0]
-            return True,s.boattype,s.boatclass,s.adaptiveclass,s.weightclass,s.sex,s
+            return True,s.boattype,s.boatclass,s.adaptiveclass,s.weightclass,s.sex,s.referencespeed,s
 
     # No Course Standard
-    return True,boattype,boatclass,adaptiveclass,weightclass,sex,None
+    return True,boattype,boatclass,adaptiveclass,weightclass,sex,5.0,None
 
 
 
@@ -1472,7 +1472,7 @@ def add_workout_indoorrace(ws,race,r,recordid=0,doregister=False):
             )
     except IndoorVirtualRaceResult.DoesNotExist:
         if doregister:
-            hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,initialcategory = default_class(r,ws[0],race)
+            hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,referencespeed,initialcategory = default_class(r,ws[0],race)
             if hasinitial:
                 record = IndoorVirtualRaceResult(
                     userid = r.id,
@@ -1483,6 +1483,7 @@ def add_workout_indoorrace(ws,race,r,recordid=0,doregister=False):
                     boatclass=boatclass,
                     sex=sex,
                     age = age,
+                    referencespeed=referencespeed,
                     entrycategory=initialcategory,
                 )
                 record.save()
@@ -1624,7 +1625,7 @@ def add_workout_race(ws,race,r,splitsecond=0,recordid=0,doregister=False):
             )
     except VirtualRaceResult.DoesNotExist:
         if doregister:
-            hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,initialcategory = default_class(r,ws[0],race)
+            hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,referencespeed,initialcategory = default_class(r,ws[0],race)
             if hasinitial:
                 record = VirtualRaceResult(
                     userid = r.id,
@@ -1637,8 +1638,10 @@ def add_workout_race(ws,race,r,splitsecond=0,recordid=0,doregister=False):
                     sex=sex,
                     age = age,
                     entrycategory=initialcategory,
+                    referencespeed=referencespeed,
                 )
                 record.save()
+                add_rower_race(r,race)
             else:
                 errors.append("Unable to find a suitable start category")
                 return result,comments,errors,0
diff --git a/rowers/tasks.py b/rowers/tasks.py
index 26ef86e3..e83d08c3 100644
--- a/rowers/tasks.py
+++ b/rowers/tasks.py
@@ -197,9 +197,9 @@ def handle_strava_sync(stravatoken,workoutid,filename,name,activity_type,descrip
         except:
             e = sys.exc_info()[0]
             t = time.localtime()
-            timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-            with open('stravalog.log','a') as f:
-                f.write('\n')
+            timestamp = bytes('{t}'.format(t=time.strftime('%b-%d-%Y_%H%M', t)),'utf-8')
+            with open('stravalog.log','ab') as f:
+                f.write(b'\n')
                 f.write(timestamp)
                 f.write(str(e))
 
@@ -446,15 +446,15 @@ def handle_check_race_course(self,
     try:
         entrytimes,entrydistances = time_in_path(rowdata,paths[0],maxmin='max',getall=True,
                                                  name=polygons[0].name,logfile=logfile)
-        with open(logfile,'a') as f:
+        with open(logfile,'ab') as f:
             t = time.localtime()
-            timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-            f.write('\n')
-            f.write('Course id {n}, Record id {m}'.format(n=courseid,m=recordid))
-            f.write('\n')
+            timestamp = bytes('{t}'.format(t=time.strftime('%b-%d-%Y_%H%M', t)),'utf-8')
+            f.write(b'\n')
+            f.write(bytes('Course id {n}, Record id {m}'.format(n=courseid,m=recordid),'utf-8'))
+            f.write(b'\n')
             f.write(timestamp)
-            f.write(' ')
-            f.write('Found {n} entrytimes'.format(n=len(entrytimes)))
+            f.write(b' ')
+            f.write(bytes('Found {n} entrytimes'.format(n=len(entrytimes)),'utf-8'))
 
     except InvalidTrajectoryError:
         entrytimes = []
@@ -471,13 +471,13 @@ def handle_check_race_course(self,
     endseconds = []
 
     for startt in entrytimes:
-        with open(logfile,'a') as f:
+        with open(logfile,'ab') as f:
             t = time.localtime()
-            timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-            f.write('\n')
+            timestamp = bytes('{t}'.format(t=time.strftime('%b-%d-%Y_%H%M', t)),'utf-8')
+            f.write(b'\n')
             f.write(timestamp)
-            f.write(' ')
-            f.write('Path starting at {t}'.format(t=startt))
+            f.write(b' ')
+            f.write(bytes('Path starting at {t}'.format(t=startt),'utf-8'))
         rowdata2 = rowdata[rowdata['time']>(startt-10.)]
 
         (
@@ -587,13 +587,26 @@ def handle_check_race_course(self,
                 endsecond=endsecond,
             )
 
-
         with engine.connect() as conn, conn.begin():
             result = conn.execute(query)
 
         conn.close()
         engine.dispose()
 
+        # add times for all gates to log file
+        with open(logfile,'ab') as f:
+            t = time.localtime()
+            f.write(b'\n')
+            f.write(b' ')
+            f.write(b'--- LOG of all gate times---')
+
+        for path,polygon in zip(paths,polygons):
+            ( secs,meters,completed) = coursetime_paths(rowdata2,
+                                                        [path],polygons=[polygon],logfile=logfile)
+            with open(logfile,'ab') as f:
+                line = " time: {t} seconds, distance: {m} meters".format(t=secs,m=meters)
+                f.write(bytes(line,'utf-8'))
+
         # send email
         handle_sendemail_coursefail(
             useremail,userfirstname,logfile
diff --git a/rowers/templates/rower_exportsettings.html b/rowers/templates/rower_exportsettings.html
index 8e7f66d2..69a6bc40 100644
--- a/rowers/templates/rower_exportsettings.html
+++ b/rowers/templates/rower_exportsettings.html
@@ -34,10 +34,11 @@
                                                  alt="connect with Polar" width="130"></a></p>
 <p><a href="/rowers/me/tpauthorize/"><img src="/static/img/TP_logo_horz_2_color.png"
                     alt="connect with Polar" width="130"></a></p>
+<!--
 <p><a href="/rowers/me/garminauthorize"><img src="/static/img/garmin_badge_130.png"
   alt="connect with Garmin" with="130"></a></p>
 
-
+-->
 
 
 {% endblock %}
diff --git a/rowers/tests/test_imports.py b/rowers/tests/test_imports.py
index 3abb8944..ef9e3935 100644
--- a/rowers/tests/test_imports.py
+++ b/rowers/tests/test_imports.py
@@ -109,7 +109,7 @@ class GarminObjects(DjangoTestCase):
         self.assertEqual(len(data),2)
 
     def test_garmin_deregistration(self):
-        data = {"userAccessToken":"dfdzf"}
+        data = {"deregistrations":[{"userAccessToken":"dfdzf"}]}
         response = self.c.post('/rowers/garmin/deregistration/',json.dumps(data),
                                content_type='application/json')
 
diff --git a/rowers/views/analysisviews.py b/rowers/views/analysisviews.py
index b02a7cb9..15de14d7 100644
--- a/rowers/views/analysisviews.py
+++ b/rowers/views/analysisviews.py
@@ -4721,7 +4721,6 @@ def history_view(request,userid=0):
 
     totalmeters,totalhours, totalminutes, totalseconds = get_totals(g_workouts)
 
-
     # meters, duration per workout type
     wtypes = list(set([w.workouttype for w in g_workouts]))
 
@@ -4860,14 +4859,13 @@ def history_view_data(request,userid=0):
 
     df = getsmallrowdata_db(columns,ids=ids)
     try:
-        df['deltat'] = df['time'].diff()
+        df['deltat'] = df['time'].diff().clip(lower=0)
     except KeyError:
         pass
     df = dataprep.clean_df_stats(df,workstrokesonly=True,
                                      ignoreadvanced=True,ignorehr=False)
 
     totalmeters,totalhours, totalminutes,totalseconds = get_totals(g_workouts)
-
     # meters, duration per workout type
     wtypes = list(set([w.workouttype for w in g_workouts]))
 
@@ -4895,7 +4893,7 @@ def history_view_data(request,userid=0):
         )
         ddf = getsmallrowdata_db(columns,ids=[w.id for w in a_workouts])
         try:
-            ddf['deltat'] = ddf['time'].diff()
+            ddf['deltat'] = ddf['time'].diff().clip(lower=0)
         except KeyError:
             pass
         ddf = dataprep.clean_df_stats(ddf,workstrokesonly=True,
@@ -4944,7 +4942,7 @@ def history_view_data(request,userid=0):
         totalseconds = 3600*hours+60*minutes+seconds
         ddf = getsmallrowdata_db(columns,ids=[w.id for w in a_workouts])
         try:
-            ddf['deltat'] = ddf['time'].diff()
+            ddf['deltat'] = ddf['time'].diff().clip(lower=0)
         except KeyError:
             pass
         ddf = dataprep.clean_df_stats(ddf,workstrokesonly=True,
diff --git a/rowers/views/importviews.py b/rowers/views/importviews.py
index 10573f7f..a512eca1 100644
--- a/rowers/views/importviews.py
+++ b/rowers/views/importviews.py
@@ -1036,26 +1036,19 @@ def garmin_deregistration_view(request):
     if request.method != 'POST':
         return HttpResponse(status=200)
 
-    t = time.localtime()
-    timestamp = time.strftime('%b-%d-%Y_%H%M', t)
-    with open('garminlog.log','a') as f:
-        f.write('\n')
-        f.write(timestamp)
-        f.write(' ')
-        f.write(str(request.body))
-
     data = json.loads(request.body)
-    try:
-        garmintoken = data['userAccessToken']
-    except KeyError:
-        print(data)
-        return HttpResponse(status=200)
-    try:
-        r = Rower.objects.get(garmintoken=garmintoken)
-        r.garmintoken = ''
-        r.save()
-    except Rower.DoesNotExist:
-        return HttpResponse(status=200)
+    deregistrations = data['deregistrations']
+    for deregistration in deregistrations:
+        try:
+            garmintoken = deregistration['userAccessToken']
+            try:
+                r = Rower.objects.get(garmintoken=garmintoken)
+                r.garmintoken = ''
+                r.save()
+            except Rower.DoesNotExist:
+                pass
+        except KeyError:
+            pass
 
     return HttpResponse(status=200)
 
diff --git a/rowers/views/planviews.py b/rowers/views/planviews.py
index 7db2babe..2de4b7a6 100644
--- a/rowers/views/planviews.py
+++ b/rowers/views/planviews.py
@@ -1967,7 +1967,11 @@ def plannedsession_view(request,id=0,userid=0):
                     microsecs = 0
 
                     # taking workout duration plus 1 minute penalty
-                    wdict['time'] = w.duration
+                    wdict['time'] = datetime.timedelta(
+                        hours=w.duration.hour,
+                        minutes=w.duration.minute,
+                        seconds=w.duration.second,
+                        )
                     wdict['distance'] = ps.course.distance
                     wdict['coursecompleted'] = False
 
diff --git a/rowers/views/racesviews.py b/rowers/views/racesviews.py
index a68ef3ba..8fd04b04 100644
--- a/rowers/views/racesviews.py
+++ b/rowers/views/racesviews.py
@@ -1631,7 +1631,7 @@ def virtualevent_addboat_view(request,id=0):
         raise Http404("Virtual Challenge does not exist")
 
     categories = None
-    hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,initialcategory = default_class(r,None,race)
+    hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,referencespeed,initialcategory = default_class(r,None,race)
     if race.coursestandards is not None:
         categories = CourseStandard.objects.filter(
             standardcollection=race.coursestandards).order_by("name")
@@ -1918,7 +1918,7 @@ def virtualevent_register_view(request,id=0):
         raise Http404("Virtual Challenge does not exist")
 
     categories = None
-    hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,initialcategory = default_class(r,None,race)
+    hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,referencespeed,initialcategory = default_class(r,None,race)
     if race.coursestandards is not None:
         categories = CourseStandard.objects.filter(
             standardcollection=race.coursestandards).order_by("name")
@@ -2943,7 +2943,7 @@ def virtualevent_submit_result_view(request,id=0,workoutid=0):
         )
 
     if records.count() == 0:
-        hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,initialcategory = default_class(r,None,race)
+        hasinitial,boattype,boatclass,adaptiveclass,weightclass,sex,referencespeed,initialcategory = default_class(r,None,race)
         if not hasinitial:
             messages.error(request,"Sorry, you have to register first")
             url = reverse('virtualevent_view',
@@ -2961,6 +2961,7 @@ def virtualevent_submit_result_view(request,id=0,workoutid=0):
             sex=sex,
             age=calculate_age(r.birthdate),
             entrycategory=initialcategory,
+            referencespeed=referencespeed,
         )
         record.save()
         records = [record]
@@ -3277,6 +3278,7 @@ def virtualevent_entry_edit_view(request,id=0,entryid=0):
         if form.is_valid():
             cd = form.cleaned_data
 
+
             teamname = cd['teamname']
             try:
                 boattype = cd['boattype']
@@ -3293,12 +3295,12 @@ def virtualevent_entry_edit_view(request,id=0,entryid=0):
             acceptsocialmedia = cd['acceptsocialmedia']
 
             sex = r.sex
+
             if mix:
                 sex = 'mixed'
 
             if boattype == '1x' and r.birthdate:
                 age = calculate_age(r.birthdate)
-                sex = r.sex
 
             if sex == 'not specified':
                 sex = 'male'
@@ -3328,6 +3330,7 @@ def virtualevent_entry_edit_view(request,id=0,entryid=0):
                     messages.error(request,'You are older than the maximum age for this group')
                     return HttpResponseRedirect(returnurl)
 
+                print(sex,coursestandard.sex)
                 if sex == 'male' and coursestandard.sex != 'male':
                     messages.error(request,'Men are not allowed to enter this category')
                     return HttpResponseRedirect(returnurl)