Loosen the back plate on the GFX card and see if you can get a few extra mm that way.
All so where the card screws into the frame of the case, there is 3 tabs on the card(last picture), the one closest to the camera looks like it has a gap of about 1 or 2 mm, while the other two seem to be bent down slightly and touching the frame.
All so where the card screws into the frame of the case, there is 3 tabs on the card(last picture), the one closest to the camera looks like it has a gap of about 1 or 2 mm, while the other two seem to be bent down slightly and touching the frame.














