An update on this set. Its 20BP4 has now been transferred over to my DuMont RA-101 Westminster, which I consider a more valuable set. I have to admit it was painful to pull the 20BP4 out of the Club 20, since that was its original home, and the set has been working very nicely.
You can read about the Westminster here:
http://www.antiqueradios.com/forums/...46908#p2246908 .
Here's a shot of the Westminster with the 20BP4 installed and happily performing its duty!
I probably won't be able to keep the Club 20, since I don't really have room for it in the house, and I don't really like it taking up space in the shop. So I'll install the 19DP4 that used to be in the Westminster in the Club 20, and see if I can find a new home for the set.