I tried to create a wp7 application using a blend expression. But is there a problem that makes me go crazy!
I created a Panorama Controller , a Panoramic Element and a Grid . In this grid I create an Image .

Why won't my image expand in width?
Here are the screenshots: The

gray image is also rounded in dx, for example, on the sx side.
Here's the config:

Is there a solution to enlarge the image as wide as the maximum grid size?
How can i do this?
This is my piece of code:
<controls:PanoramaItem Foreground="Black" >
<Grid Margin="1,26,160,46" Width="418">
[...]
<Grid Margin="0,190,8,0" VerticalAlignment="Top" Height="207" >
<Image Source="JobRow.png" Margin="8,34,27,50" Stretch="None" />
</Grid>
</Grid>
</controls:PanoramaItem>
Any idea please?
EDIT 1: Stretch, , !
... , !!!

EDIT 2: !
<controls:PanoramaItem Foreground="Black" Width="438" Orientation="Horizontal">