DataVisualization.Charting.Chart Can't overlay lineseries on columnseries - wpf

Question

I'm using the WPFToolkit v 3.5.4 to overlay two line series on a column series, but the line series are 'pushed' to the left of the column series as seen in the top graph of the image. All series are of List<KeyValuePair<double, int>> and I've checked the key/value pairs are what I want displayed.
The second graph successfully overlays three LineSeries (using different data) but looks poorly.
Is there a way to mix charting series types (ColumnSeries, LineSeries) on the same chart?
Thanks
Here's the Xaml for the two graphs in the image:
<chartingToolkit:Chart Name="lineChart1" Title="Series1" VerticalAlignment="Top" Margin="449,39,43,0" Height="262">
<chartingToolkit:ColumnSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [0]}"
IsSelectionEnabled="True" />
<chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [1]}"
IsSelectionEnabled="True" />
<chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [2]}"
IsSelectionEnabled="True" />
<!-- Remove the legend -->
<chartingToolkit:Chart.LegendStyle>
<Style TargetType="Control">
<Setter Property="Width" Value="0"/>
<Setter Property="Height" Value="0"/>
</Style>
</chartingToolkit:Chart.LegendStyle>
</chartingToolkit:Chart>
<chartingToolkit:Chart Name="lineChart2" Title="Series2" VerticalAlignment="Top" Margin="33,330,440,0" Height="262">
<chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [0]}"
IsSelectionEnabled="True" />
<chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [1]}"
IsSelectionEnabled="True" />
<chartingToolkit:LineSeries DependentValuePath="Value" IndependentValuePath="Key" ItemsSource="{Binding [2]}"
IsSelectionEnabled="True" />
<chartingToolkit:Chart.LegendStyle>
<Style TargetType="Control">
<Setter Property="Width" Value="0"/>
<Setter Property="Height" Value="0"/>
</Style>
</chartingToolkit:Chart.LegendStyle>
</chartingToolkit:Chart>

Answer 1

You need to set LinearAxis for the first chart, because you put ColumnSeries first and they use CategoryAxis instead of the correct one.
Here is the code for the first chart:
<chartingToolkit:Chart Name="lineChart1" Title="Series1" VerticalAlignment="Top" Margin="449,39,43,0" Height="262">
<chartingToolkit:Chart.Axes>
<chartingToolkit:LinearAxis Orientation="X" />
</chartingToolkit:Chart.Axes>
...
The code of the second chart is correct, but the chart looks bad because of the data that you use for binding.
Post C# code where you set the DataContext property and post what values you use there.