Is there a way to adjust the size of the nav screen? I have 1/4" or so of black around the edges, and would like to stretch the screen a bit.

I went into the service menu, and didn't see anything in there. If anyone knows any way to do this, please speak up!

 

Can you take a pic and post it? 1/4" sounds excessive.

 

Sure, here you go. Top and bottom are fine - left and right sides drive me nuts!

 

I'm pretty sure you can't "stetch" the image to fill in the black borders. The image probably already uses every pixel available on its screen. The "black border" was probably put their intentionally as to not obscure the edges of the screen when you are looking at it from an off angle.