I checked the horizontal output tube and the HV tube and both measured bad on emissions. I was able to swap the 6BG6 with another that tested ok, but I don't currently have another 1X2 tube to swap for the HV. I also changed a resistor on the HV which measured as 446k in the spot where a 1 meg resistor should be, so I put in a 1.1 meg resistor that I had on hand. The picture looks significantly better but now the audio is worse, with a fairly loud hum drowning out the audio, much more than it did originally. Video of it working here:
https://drive.google.com/file/d/1rF1...ew?usp=sharing Photos are with the brightness turned all the way down.