diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index d88c71f1..2d99154c 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -4424,6 +4424,8 @@ def interactive_flexchart_stacked(id,r,xparam='time',
                'power','hr','spm','driveenergy',
                'time','pace','workoutstate']
 
+    comment = None
+
     rowdata = dataprep.getsmallrowdata_db(columns,ids=[id],doclean=True,
                                           workstrokesonly=False)
 
@@ -4633,7 +4635,7 @@ def interactive_flexchart_stacked(id,r,xparam='time',
     plot2.x_range = xrange1
     plot3.x_range = xrange1
     plot4.x_range = xrange1
-    
+
     if xparam == 'time':
         plot4.xaxis[0].formatter = DatetimeTickFormatter(
                 hours = ["%H"],
@@ -4651,88 +4653,95 @@ def interactive_flexchart_stacked(id,r,xparam='time',
 
     if yparam1 == 'pace':
         y1tooltip = '@fpace'
-    else:
+    elif yparam1 != 'None':
         y1tooltip = '@{yparam1}'.format(yparam1=yparam1)
         if metricsdicts[yparam1]['numtype'] == 'integer' or yparam1 == 'power':
             y1tooltip+='{int}'
         else:
             y1tooltip+='{0.00}'
+    else:
+        y1tooltip = ''
+        comment = 'The metric in the first chart is only accessible with a Pro plan or higher'
 
     if yparam2 == 'pace':
         y2tooltip = '@fpace'
-    else:
+    elif yparam2 != 'None':
         y2tooltip = '@{yparam2}'.format(yparam2=yparam2)
         if metricsdicts[yparam2]['numtype'] == 'integer' or yparam2 == 'power':
             y2tooltip+='{int}'
         else:
             y2tooltip+='{0.00}'
+    else:
+        y2tooltip = ''
+        comment = 'The metric in the second chart is only accessible with a Pro plan or higher'
 
     if yparam3 == 'pace':
         y3tooltip = '@fpace'
-    else:
+    elif yparam3 != 'None':
         y3tooltip = '@{yparam3}'.format(yparam3=yparam3)
         if metricsdicts[yparam3]['numtype'] == 'integer' or yparam3 == 'power':
             y3tooltip+='{int}'
         else:
             y3tooltip+='{0.00}'
+    else:
+        y3tooltip = ''
+        comment = 'The metric in the third chart is only accessible with a Pro plan or higher'
 
     if yparam4 == 'pace':
         y4tooltip = '@fpace'
-    else:
+    elif yparam4 != 'None':
         y4tooltip = '@{yparam4}'.format(yparam4=yparam4)
         if metricsdicts[yparam4]['numtype'] == 'integer' or yparam4 == 'power':
             y4tooltip+='{int}'
         else:
             y4tooltip+='{0.00}'
+    else:
+        y4tooltip = ''
+        comment = 'The metric in the fourth chart is only accessible with a Pro plan or higher'
 
+    if yparam1 != 'None':
+        hover1.tooltips = OrderedDict([
+            ('Time','@ftime'),
+            ('Distance','@distance{int}'),
+            (axlabels[yparam1],y1tooltip),
+            (axlabels[yparam2],y2tooltip),
+            (axlabels[yparam3],y3tooltip),
+            (axlabels[yparam4],y4tooltip),
+            ])
+    if yparam2 != 'None':
+        hover2.tooltips = OrderedDict([
+            ('Time','@ftime'),
+            ('Distance','@distance{int}'),
+            (axlabels[yparam1],y1tooltip),
+            (axlabels[yparam2],y2tooltip),
+            (axlabels[yparam3],y3tooltip),
+            (axlabels[yparam4],y4tooltip),
+            ])
 
+    if yparam3 != 'None':
+        hover3.tooltips = OrderedDict([
+            ('Time','@ftime'),
+            ('Distance','@distance{int}'),
+            (axlabels[yparam1],y1tooltip),
+            (axlabels[yparam2],y2tooltip),
+            (axlabels[yparam3],y3tooltip),
+            (axlabels[yparam4],y4tooltip),
+            ])
 
+    if yparam4 != 'None':
+        hover4.tooltips = OrderedDict([
+            ('Time','@ftime'),
+            ('Distance','@distance{int}'),
+            (axlabels[yparam1],y1tooltip),
+            (axlabels[yparam2],y2tooltip),
+            (axlabels[yparam3],y3tooltip),
+            (axlabels[yparam4],y4tooltip),
+            ])
 
-
-
-
-
-
-
-    hover1.tooltips = OrderedDict([
-        ('Time','@ftime'),
-        ('Distance','@distance{int}'),
-        (axlabels[yparam1],y1tooltip),
-        (axlabels[yparam2],y2tooltip),
-        (axlabels[yparam3],y3tooltip),
-        (axlabels[yparam4],y4tooltip),
-        ])
-    hover2.tooltips = OrderedDict([
-        ('Time','@ftime'),
-        ('Distance','@distance{int}'),
-        (axlabels[yparam1],y1tooltip),
-        (axlabels[yparam2],y2tooltip),
-        (axlabels[yparam3],y3tooltip),
-        (axlabels[yparam4],y4tooltip),
-        ])
-
-    hover3.tooltips = OrderedDict([
-        ('Time','@ftime'),
-        ('Distance','@distance{int}'),
-        (axlabels[yparam1],y1tooltip),
-        (axlabels[yparam2],y2tooltip),
-        (axlabels[yparam3],y3tooltip),
-        (axlabels[yparam4],y4tooltip),
-        ])
-
-    hover4.tooltips = OrderedDict([
-        ('Time','@ftime'),
-        ('Distance','@distance{int}'),
-        (axlabels[yparam1],y1tooltip),
-        (axlabels[yparam2],y2tooltip),
-        (axlabels[yparam3],y3tooltip),
-        (axlabels[yparam4],y4tooltip),
-        ])
-
-    hover1.mode = 'mouse'
-    hover2.mode = 'mouse'
-    hover3.mode = 'mouse'
-    hover4.mode = 'mouse'
+    hover1.mode = 'vline'
+    hover2.mode = 'vline'
+    hover3.mode = 'vline'
+    hover4.mode = 'vline'
 
     y1min = get_yaxminima(r,yparam1,mode)
     y2min = get_yaxminima(r,yparam2,mode)
@@ -4797,7 +4806,7 @@ def interactive_flexchart_stacked(id,r,xparam='time',
     js_resources = INLINE.render_js()
     css_resources = INLINE.render_css()
 
-    return script,div,js_resources,css_resources
+    return script,div,js_resources,css_resources,comment
 
 
 
diff --git a/rowers/templates/flexchartstacked.html b/rowers/templates/flexchartstacked.html
index d6468570..f162fc09 100644
--- a/rowers/templates/flexchartstacked.html
+++ b/rowers/templates/flexchartstacked.html
@@ -3,7 +3,7 @@
 {% load rowerfilters %}
 {% load tz %}
 
-{% block title %} Flexible Plot {% endblock %}
+{% block title %}Chart Stack{% endblock %}
 
 {% localtime on %}
 {% block main %}
@@ -31,7 +31,7 @@
 </p>
 
 
-<h1>Flexible Chart</h1>
+<h1>Chart Stack</h1>
 
 <ul class="main-content">
   <li class="grid_4">
diff --git a/rowers/templates/menu_workout.html b/rowers/templates/menu_workout.html
index 0de063d9..cf9e7c26 100644
--- a/rowers/templates/menu_workout.html
+++ b/rowers/templates/menu_workout.html
@@ -73,16 +73,16 @@
     <input type="checkbox" name="group-flexchart" id="group-flexchart">
     <label for="group-flexchart">Interactive Charts</label>
     <ul>
-      <li id="chart-flexchart">
-        <a href="/rowers/workout/{{ workout.id|encode }}/flexchart/">
-          <i class="fas fa-chart-line fa-fw"></i>&nbsp;Flex Chart
-        </a>
-      </li>
       <li id="chart-stackedchart">
         <a href="/rowers/workout/{{ workout.id|encode }}/flexchartstacked/">
           <i class="fas fa-align-justify fa-fw"></i>&nbsp;Chart Stack
         </a>
       </li>
+      <li id="chart-flexchart">
+        <a href="/rowers/workout/{{ workout.id|encode }}/flexchart/">
+          <i class="fas fa-chart-line fa-fw"></i>&nbsp;Flex Chart
+        </a>
+      </li>
       {% if workout|water %}
       <li id="chart-map">
         <a href="/rowers/workout/{{ workout.id|encode }}/map/">
diff --git a/rowers/views/workoutviews.py b/rowers/views/workoutviews.py
index d63c85c6..00cada4c 100644
--- a/rowers/views/workoutviews.py
+++ b/rowers/views/workoutviews.py
@@ -3966,7 +3966,7 @@ def workout_flexchart_stacked_view(request,*args,**kwargs):
             yparam4 = cd['yaxis4']
 
     (
-        script, div, js_resources, css_resources
+        script, div, js_resources, css_resources, comment
     ) = interactive_flexchart_stacked(
         encoder.decode_hex(id),r,xparam=xparam,
         yparam1=yparam1,
@@ -3976,6 +3976,9 @@ def workout_flexchart_stacked_view(request,*args,**kwargs):
         mode=workout.workouttype,
     )
 
+    if comment is not None:
+        messages.error(request,comment)
+
     initial = {
         'xaxis':xparam,
         'yaxis1':yparam1,