In the end I decided to follow jr_tech's advice.
I removed the 6CB6 HOT and gradually brought it up on a variac monitoring the power. It was drawing 380 watts at full voltage which is about 40 watts high. Just the variac draws 10 watts so it might be closer to 370 watts.
After reinstalling the 6CB6 and hooking up my laserdisc player I had a raster and good sound!
The raster is high and to the left.
When I adjust the horizontal hold and get it close to locking in it goes into something that looks like barkhausen.
The power draw was down to 340 watts during this. I don't understand why, maybe having a signal helped. I thought having the HOT tube in would make it draw more.
Although it's difficult to tell in the photo, when I looked at the bright dots caused by the closed captioning, the convergence wasn't very bad. I thought it would be a lot worse with the raster positioned like it is. With no signal I get a very uniform white screen.
It looks like a simple recap and checking for bad resistors will make this an easy restore when I get around to it.
Oh, cats... All three of mine wanted to help. This made it quite a bit more difficult.
John