I used to work at an auto plant and they used rubber mallets to hit the mounts and used feeler gauges to ensure it was aligned correctly. It was wild to see.Reminds me of the time I brought a new car in to complain about the fit of a drivers door.
Body shop guy says "you sure you want to see this?" as he pounds on the door post with a 5 lb lead
It fixed the issue, and I never told the wife about it (was her car).