Sorry to hear you got a bad control. Mine just arrived also in their original packing including desiccant. Luckily, both test good
Before I install it, I wanted to sort out the sync and sound issues.
I put a scope to work and found the horizontal synchro waveform looked great, but the synch signal feeding it had a lot of video present.
The sync circuit has new tubes, paper caps and bad resistors replaced. That left the micas. Sure enough, found some bad ones!
That improved things, but still not quite right. Very touch horizontal with some bending.
Continued checking micas and found a bad 270pF off the hor oscillator coil. Bingo!
Continued checking micas into the sound circuit and found a bad 47pF on the audio output tube. Damn you micamold! I went ahead and replaced the two other micas caps in the sound IF just for good measure.
Finally, I have sound! Not the best but I expect I need to tweak the sound IF alignment after replacing those caps.
I also replaced the very worn out eye tube and it's working great now

Looks like I'm in the home stretch on this project