We're nearly there. Only two small setbacks to report on the silver surfer Kmart 100 project. One minor, one not-so-minor.
The minor issue is feet: none of the ones I have laid in will fit in the slightly-smaller wells in the case, necessitating a return trip to the hardware store with the only remaining non-crumbled foot to get a sense of size. I should be able to find something.
The more serious issue came in replacing the return arm, which had to come off so I could remove the side panel for paint removal. Over-exuberant me decided to over-tighten the small bolt that holds the whole thing together, shearing it apart right in the middle. After filling the air with the heady perfume of weapons-grade profanity, I slipped the broken bolt into the film can which will accompany me to the hardware store. There's some sort of rule here: for any home project that requires N trips to the hardware store, expect to make N+2 trips.
While in the process of fixing things up, I noticed that the backspace mechanism doesn't work, or at least doesn't choose to work with any sort of regularity. This seems to be the fault of a long-broken spring, and I'm not going to fret over it. Maybe that key has a future role to play if I ever yearn to open this machine up again. LED lighting? It could happen.
Meanwhile, I've re-felted the interior panels, obscuring the old blue surfaces. With some extra fabric, I even glued a little inside the repainted knobs, which came out pretty cool, in my opinion. I have a couple of simple decorations I want to add to the machine before I call it "done," but repairing the unintentional damage caused by my zealous tightening and finding suitable replacement feet needs to happen first.