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Bryan,
I put the scope on mine tonight and found that the horizontal waveform was not equal peaks. I adjusted that, and then was unable to get stable horiz sync. I then found that the horizontal frequency was way off (low). The waveform was bad because the frequency was off, and adjusting for the right waveform (equal peaks) only made the frequency worse. I turned the waveform coil several turns the other way, which got the frequency back up, then adjusted the horiz hold control, then back to the waveform to get it closer, and after several times back and forth got both good sync and the proper waveform. SO - these two things interact considerably!
Also, when it was initially out of whack, the other controls like color and contrast would affect it, as you observed (I'm guessing this is mainly due to it being sensitive to B+ when it is not properly locking.)
I have not replaced the mica caps, but this might still be your problem, I guess.
- Wayne
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