I finished my rebuild. Got it for $50, but it needed a total tear down. Replaced all gaskets and O-rings, citric acid cleaned everything, replaced the hot water switch, had the procon rebuilt, replaced one solenoid valve, and new thermostat. Not sure I care to know my total investment, but it's been fun learning about the machine along the way. And way less than a comparable machine in working condition.
Now I just need to start learning the ropes; Barista basics. And finish the "man cave/theater/espresso-wine bar" so it has a permanent home.
For those that warn of the journey to lever, lever-land: I almost bought a vintage Cremina on my last trip to Genoa. But since the S27 wasn't operational and the room is under renovation, I figured the Mrs. would have a fit. Maybe next time. Watching the baristas in Napoli starts building the appreciation for the lever.