Here's my progress on the tubes. After pulling the way tubes out of the evaporust bath, I found they were pretty pitted. This is the tube I soaked them in, on at a time.
They both have some pretty heavy oxidation where the headstock sat for years. Even after soaking four days in solution it didn't come off. I experimented with a few techniques but ended up taking the majority of it off with a coarse wire wheel, then a fine wire wheel and then a 50 grit flapper wheel. This photo was taken after the coarse wire wheel.
Here's the rig I used to turn the tubes. Roller blade wheels at one end...
And a 1 1/2" expansion plug at the other. I made a wooden plug originally but the soft pine didn't hold up to the forces exerted upon it. It basically blew up inside the tube.
After 150 grit, 320 grit, 400 grit and paste wax.
