I'm getting a very odd thing going on in 7.2.0. ( Non Profit Standard). I need to mirror the top images for my masks however when I do everything is out of alignment with the bottom mask. All my board dimensions are correct as far as I can tell. Everything is on the same .05 inch grid but the top image isn't printing square I don't know where to look next. The board is exactly 4x4 inches. What could be causing this?