No worries! I can see that you're rather busy here, haha. Anyways, I figured out how to change the box location and dimensions with the "Margin" part in the XAML code, as you also pointed out. The only issue that I have now is that the box size and position changes depending on the original 3D boxart size. As you can see below, the Sega Genesis box is too small but this is not the case with some other systems like SNES, Dreamcast, etc. which are more basic square shape (cd case) or wide box (SNES, Nintendo 64). Seems like an obvious answer, but I gather that I'll have to make different (individual) themes with different "Margin" values for each system?