Started it again, and it works! Some of the drawbars are a bit crackly, but I think that will work out with some playing. As usual with this unit, it takes two or three tries with the start switch to get the start motor to engage, but that's no big deal. Everything works and the rotating mechanisms are all quiet.
To celebrate, I hereby present some Hammond-guts porn. The preamp:
The power amp:
The reverb amp:
The run motor, scanner, and flywheel, illuminated by the pilot light: