The horizontal drive control seemed to have little effect. It seems just a tad brighter, but it's in the case now, so I couldn't test for HV. Gonna pull the chassis again, and go over it, as well as that resistor.
I tested the 1B3, and it was good, but I've heard that doesn't necessarily mean anything. It's an OEM tube (I think) with the "RCA Victor" script on it.....and I have plenty of NOS ones, so I'll dunk a new one in as well.
Incidentally, the set got some press today on Facebook
https://www.facebook.com/photo.php?f...type=3&theater