We have done the door pins a few times on our Sub.
The cheap replacement sets you get at the parts store are just that.
The bushings may last a few years or a few days.
The last set of those we put in was just a couple weeks when one crumbled.
Then on this forum somebody piped up about this fully machined set of door pin hardware awesomeness. While they are not cheap, they are quality.
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@Maxwellvis has found that balancing the door on the roller seat makes the job much easier. Then we use the jack and a block of wood to move the door around for alignment of the holes.
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After putting these in on the drivers side and feeling the door close like it was a 50k body instead of a 225k body, I was sold and ordered a set for the other front door.
When I ordered my 2 sets, they were about $95 each set.
They have a grease zerk and the bushings are fully machined solid brass for long life.
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