Ha, even before I got to taking pics, I noticed that on the right side of the camera, the geared track is missing. So when I turn the knob, it goes completely out of whack. I can't believe I didn't see this before, but I think I remember when it happened and how, although that really doesn't matter now. There is a good machining company in town, with the delightful name of "General Grinding," and I have used them before to make a part for my Kodak Master 8x10. I love saying that I am taking a job "to the General." The shop itself is straight out of the early 20th century (or even late 19th!): benches and tables worn smooth from decades of working with oils, lubricants, etc. The machines themselves are amazing and I have often thought of asking if I could photograph there for an afternoon.
Thanks for all the suggestions!
A footnote: when I got that part made for my KMV, Michael Smith actually loaned me the same part from one of his cameras so I could show them as a model. I am still grateful to him.