First you need to inspect is what is actually wearing out.
The pin? Or the hole the pin passes through? Maybe both?
The first 30 seconds of this vid might give you a better picture of what to look for. It clearly shows a worn out plastic bushing in a chevy. True- we don’t have bushings, but it shows how to replace or install a set if your door hinge is wallered out. You will need to drill the hole in the door bracket larger to accept a bushing. (Make sure you have enough room). A step drill would probably be good for this if you find a bushing the correct size.
Looking at mine, It looks like there is barely enough room in there for a bushing. It would need to be installed from the outsides(top and bottom) unless you take the time to cut down the hinge on the car a bit(more work). It would be nice to have the hinge riding on the bushing.
On my car the body side is pretty much a solid chunk of steel with a hole drilled all the way through and it suppose it could be loose, but probably because somebody drilled it out?
Since the door is only supported by one hinge it is fairly critical that tolerances are very close. Any slight wiggle at the hinge will mean an inch out at the latch.
Here is a bronze bushing for the concept.
