Sorry, I should have clarified. I'm using a copy of the default theme.
I've primarily been messing with PlatformWheel1FiltersView.xaml, adjusting the grid sizing. Since that would only crop the image , I thought maybe it was more upstream. I've also tried ThumbnailListView.xaml and ThumbnailGameView.xaml, and still no dice. I've tried so many things I'm not sure what code I would post. Ultimately everything I try, just ends up cropping the image.
Really appreciate the support.