I had a Prusa Mini Display that seems to be a different revision (despite label showing same model number) which has through hole components which results in solder points on the backplane. On my Day 1 Mini, there are no through hole components in the area. One of these solder points interfered with one of the screw head shoulders. This resulted in the backplate not sitting flush and even on the back. Pictures attached which highlight the issue.

I therefore did a very quick and hacky remix where I cut off a corner of the screw head shoulders. Now the screw head shoulders clear the solder point in the back. I did not change anything else from the original design.