The plastic sleeve insert in the bushing on my car disintegrated and I relaced the whole upper hinge on the driverside on my 91 Bonneville a few years back. Got a hinge off one from a junk yard car that had very little wear. I got it installed & lined up pretty close myself, then took it to a body shop for a final adjustment.
The door latch wasn't hitting the striker on the center post properly. The striker on my car is non adjustable.
The body shop had these eight foot long pry bars and slide hammer and one hell of a sledge hammer to knock the hinge back into alignment.
The guys at the body shop couldn't believe how close I got by using jus two hands, then I told them - I didn't loosen the lower hinge when I installed it, I sprung the door slightly out from the upper hinge, then slid the replacement upper hinge in where I put a line up mark then bolted it down.
Good Luck
harryface