silverlight 4 display multiple pie charts - silverlight

Question

Code:
<toolkit:Chart x:Name="pieChart" Grid.Row="2" Title="">
<toolkit:Chart.Series>
<toolkit:PieSeries ItemsSource="{Binding}"
IndependentValueBinding="{Binding A}"
DependentValueBinding="{Binding X}"
Margin="-500,0,0,0">
</toolkit:PieSeries>
<toolkit:PieSeries ItemsSource="{Binding}"
IndependentValueBinding="{Binding A}"
DependentValueBinding="{Binding Y}"
Margin="0,0,0,0"/>
<toolkit:PieSeries ItemsSource="{Binding}"
IndependentValueBinding="{Binding A}"
DependentValueBinding="{Binding Z}"
Margin="500,0,0,0"/>
</toolkit:Chart.Series>
</toolkit:Chart>
Without margins three pies overlay to one. How do I make them split into three? Note: with <toolkit:ColumnSeries everything works as expected.
I guess a better question would be: how do I show three pies with one legend?
EDIT: Solution
Like vorrtex suggested, I found no simpler way of doing this. A chart without a legend:
<toolkit:Chart x:Name="pieChart" LegendStyle="{StaticResource NoLegendStyle}">
<toolkit:Chart.Series>
<toolkit:PieSeries ItemsSource="{Binding}"
IndependentValueBinding="{Binding A}"
DependentValueBinding="{Binding X}"/>
</toolkit:Chart.Series>
</toolkit:Chart>
A Legend without a chart:
<toolkit:Chart x:Name="pieChart3" ChartAreaStyle="{StaticResource NoChartStyle}">
<toolkit:Chart.Series>
<toolkit:PieSeries ItemsSource="{Binding}"
IndependentValueBinding="{Binding A}"
DependentValueBinding="{Binding X}"/>
</toolkit:Chart.Series>
</toolkit:Chart>
Where styles are:
<UserControl.Resources>
<Style x:Key ="NoLegendStyle" TargetType="toolkit:Legend">
<Setter Property="Height" Value="0" />
<Setter Property="Width" Value="0" />
</Style>
<Style x:Key ="NoChartStyle" TargetType="chartingPrimitivesToolkit:EdgePanel">
<Setter Property="Height" Value="0" />
<Setter Property="Width" Value="0" />
</Style>
</UserControl.Resources>
and
xmlns:chartingPrimitivesToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting.Primitives;assembly=System.Windows.Controls.DataVisualization.Toolkit"
All charts share same datacontext.

Answer 1

Disable the legend on 2 of the charts. Then programmatically add the legend items to the legend you are displaying.