Simple Question, that you might already know about. Are the front and rear rings the same height? Ruger front and rear rings are the same height on No. 1, and different heights for the 77/Hawkeye models. If you are using genuine Ruger rings, they will be marked with a number, and those numbers should be the same (ex 3 and 3) for the No 1. If they are different numbers (like 3 and 4) they are likely for a 77 or Hawkeye.
I have two #3 low rings on right now. I previously had two #4 offset rings installed. Scope is level in the rings. That’s why I think the rib is messed up.
