On Friday, I ordered a 60-pitch grip bushing tap for the 1991, new bushings, shiny new, blued, slotted grip screws by Cylinder & Slide and a bushing driver, all from our friends at Midway USA; by this afternoon, I had them all and headed to the basement.
Out with all the old bushings, heap plenty oil, start that tap by hand! Cleaned out all the tapped holes in the grippy part of the frame, including the one that chews up bushings (and removed a few nasty chunks of metal on that one, popcorn-salt sized), taking out more rust than I expected. Wiped up the excess, cleaned out the threads with an oily pipe cleaner, installed the new bushings, the nice grips Og presented to me some months ago, and the new grip screws. Whattaya think? (Nice low serial number, hey?)
4 months ago