UserControl inBetween TabHeader and Tab Content
===

i don't know what i trying to do is Possible or not ?

but what i trying is to put a UserControl in between the TabHeader and TabContent, but i am not able to put the Margin as much i want

    <ControlTemplate TargetType="{x:Type TabItem}" >
        <Grid Width="Auto" Height="Auto" x:Name="TabItemRoot" Margin="10,0,5,0">
          <ContentPresenter Margin="10,5,0,5" x:Name="Content" ContentSource="Header"
               RecognizesAccessKey="True"/>
               <Border x:Name="border" Height="Auto" Padding="0,0,0,0" Opacity="0">
                <Border.Background>
                 <RadialGradientBrush>
                  <GradientStop Color="#A3FFFFFF" Offset="0"/>
                  <GradientStop Color="#00FFFFFF" Offset="1"/>
                 </RadialGradientBrush>
                </Border.Background>
              </Border>
   </Grid>

Whenever i set the Margin it move the Content in it but not the control.


