It looks great, Bob. I think you can call this one done. I doubt the owner would even notice the vertical band on the right side (I also have never seen one on the right side of the picture). But hopefully the drive control will take care of it.
As for the squealing in the HV cage, mine also has electrical tape wrapped around the HOT plate lead. I haven't heard squealing from mine but I wonder if this was an issue with this set
I ordered a bunch of Twilight Zone DVDs that I plan to watch on the DuMont over the holidays.
-Clark