[Daniel Bingamon]

A funny thing. I finished replacing caps, put a new 3-prong cord on it, oiled the tuning and put it all back together and the problem went away. It apparently didn't like laying on its side on the workbench - now in the upright with all the screws back in it's working great, all three bands, comes in like gangbusters -- best patient I even had.
I'm going to fix the pencil hole in the speaker, put it back in cabinet and send it on its way.