Well I have run into my first stumper. I'm having a problem with the vertical. There's a short video of the problem in the link below (the set is on it's side btw).
http://www.youtube.com/watch?v=WXtdZeuZpO8
I've gone through the resistors in the vertical section and they all read within 20% of spec. I've also swapped the 6SN7 out. The problem kind of looks like the oscillator is running too slowly but the dual "rolling" lines have me stumped. Any one got any ideas?