A semi-final restoration note:
I had not replaced the selenium rectifier with a diode. So, I went down to the local Radio Shack to find a 1N-4007 (1000V 3 amp) but all I could find was a 1N-4005 (600V 1amp).
Installed it anyways, and noticed the HV is now over 3KV, the screen is brighter and clearer, and the Audio screams loud and clear with no distortion.
I figure the 1N-4005 might be still choking off the HV (should be over 4KV), so I will replace it with a proper 1N-4007 when I get one.
Replacement electronic parts on Martha's Vineyard ain't all it's cranked up to be.