Found a Facebook photo, all of mine look like this too:
Just assembled 4 A1’s and they all have what looks like a misfitting head bed plate that is bowed up near the back. It’s easy to see if you just follow the edge of the housing or confirm with a straight edge, it looks like the back edge is just not seated in the housing or something is interfering with it.
Date codes were May 2024 to Jan 2025 (rev C and rev D).
Is this a common thing? Are they all like that?