My specialty. Rebuilding door hinges on the car is like rebuilding and engine in the car. You will get the same results. The proper way is to bore and ream the pivot pin holes to the next oversized pin diameter. You won't know that until you disassemble the hinges. Like not knowing how much you need to bore a cylinder to make it round so you then know the correct piston size. And that is not a rebuild only a lower pin replacement. Often A-body lowers are cracked in the middle of the door side lower and the door check rollers are frozen. We replace everything, not just a couple of pins.
The lower hinges support the doors weight, that is why they uses steel on steel pin. The uppers locate the door and use softer bronze bushings.
If you want more, correct information. Contact me. My hinge info is a "sticky" on this site.
