Gunslinger - That's it. And what's weird, it will happen sometime and then will work fine for a long time, then just start in again. I'm encouraged. This sounds like what is illustrated in this CTC140 fix at 1:10sec into the video, the standup board near the high voltage transformer :
https://www.youtube.com/watch?v=DoLY4ZZYwkY
I'll remember what you said about sliding the chassis out. :-) Thank you much for the tip and I'll be sure to document it and present the results.
Phil