Prusa i3 MK3 frame not level
I have a Prusa i3 MK3 kit which I have just begun to build. I've followed the instructions to the letter and I've taken apart and reassembled the frame several times, and I cannot make the frame level. I've tried rotating the extrusions and front/rear plates in different combinations. I attached all 4 extrusions and set the frame on the front and back plates with the plates laying down flat, and at that point the frame is level, so I believe I have an issue with either the front or back plate either being warped, misshaped or the holes are misaligned. The frame does not begin to wobble until I tighten the screws on the front and back plates. I tried applying downward pressure on the frame while tightening the screws for the plates with no luck. I used a feeler gauge underneath the front plate of the assembled frame and it's off by about .61 MM.
Has anyone else run into this issue, and if so can you recommend a solution? I've sent this question to Prusa Support, but I thought I'd post it here in case someone else has had this problem. I was hoping I was just missing something and do not need new front and rear plates.
Is this a good question?