One of the 12BH7 tubes is Horiz Mult... I did exchange a slightly stronger one and switched them around and the screen would not fill in on one side.. all the caps look to be replaced and alot of the resistors..
Here's some pics:
Not sure where the Horz osc adjustment is, but I assume it's one of these little flat head screw driver adjustments seen in these pics.. I don't have the full correct sams photofact:
Bottom of chassis:
