--- a/ckanext/ga_report/controller.py
+++ b/ckanext/ga_report/controller.py
@@ -417,14 +417,11 @@
     # Create a consistent x-axis between all series
     num_points = [ len(series['data']) for series in data ]
     ideal_index = num_points.index( max(num_points) )
-    x_axis = []
-    for series in data:
-        for point in series['data']:
-            x_axis.append(point['x'])
-    x_axis = sorted( list( set(x_axis) ) )
-    # Zero pad any missing values
+    x_axis = [ point['x'] for point in data[ideal_index]['data'] ]
     for series in data:
         xs = [ point['x'] for point in series['data'] ]
+        assert set(xs).issubset( set(x_axis) ), (xs, x_axis)
+        # Zero pad any missing values
         for x in set(x_axis).difference(set(xs)):
             series['data'].append( {'x':x, 'y':0} )
     if percentageMode:
@@ -433,6 +430,9 @@
             for series in series_list:
                 for point in series['data']:
                     totals[point['x']] = totals.get(point['x'],0) + point['y']
+            lengths = [ len(series['data']) for series in series_list ]
+            assert len(set(lengths))==1
+            assert lengths[0] == len(totals)
             return totals
         # Transform data into percentage stacks
         totals = get_totals(data)

--- a/ckanext/ga_report/templates/ga_report/publisher/index.html
+++ b/ckanext/ga_report/templates/ga_report/publisher/index.html
@@ -24,8 +24,8 @@
 
   <py:def function="optional_head">
     <link rel="stylesheet" type="text/css" href="/scripts/vendor/rickshaw.min.css"/>
-    <link rel="stylesheet" type="text/css" href="/css/ga_report.css"/>
-    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js"></script>
+    <link rel="stylesheet" type="text/css" href="/css/ga_report.css?1"/>
+    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js?1"></script>
     <script type="text/javascript" src="/scripts/vendor/jquery.sparkline.modified.js"></script>
     <script type="text/javascript" src="/scripts/rickshaw_ie7_shim.js"></script>
     <script type="text/javascript" src="/scripts/vendor/d3.v2.js"></script>

--- a/ckanext/ga_report/templates/ga_report/publisher/read.html
+++ b/ckanext/ga_report/templates/ga_report/publisher/read.html
@@ -9,8 +9,8 @@
 
   <py:def function="optional_head">
     <link rel="stylesheet" type="text/css" href="/scripts/vendor/rickshaw.min.css"/>
-    <link rel="stylesheet" type="text/css" href="/css/ga_report.css"/>
-    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js"></script>
+    <link rel="stylesheet" type="text/css" href="/css/ga_report.css?1"/>
+    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js?1"></script>
     <script type="text/javascript" src="/scripts/vendor/jquery.sparkline.modified.js"></script>
     <script type="text/javascript" src="/scripts/rickshaw_ie7_shim.js"></script>
     <script type="text/javascript" src="/scripts/vendor/d3.v2.js"></script>

--- a/ckanext/ga_report/templates/ga_report/site/index.html
+++ b/ckanext/ga_report/templates/ga_report/site/index.html
@@ -9,8 +9,8 @@
 
   <py:def function="optional_head">
     <link rel="stylesheet" type="text/css" href="/scripts/vendor/rickshaw.min.css"/>
-    <link rel="stylesheet" type="text/css" href="/css/ga_report.css"/>
-    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js"></script>
+    <link rel="stylesheet" type="text/css" href="/css/ga_report.css?1"/>
+    <script type="text/javascript" src="/scripts/ckanext_ga_reports.js?1"></script>
     <script type="text/javascript" src="/scripts/vendor/jquery.sparkline.modified.js"></script>
     <script type="text/javascript" src="/scripts/rickshaw_ie7_shim.js"></script>
     <script type="text/javascript" src="/scripts/vendor/d3.v2.js"></script>