Here is a rather belated update on this restoration, have been busy with other things of late
The vertical section has now been totally recapped and all resistors replaced, most of them were way out of spec and the result is now a nice even picture that fills the screen. I can adjust linearity and height now without any problems.
I also tidied up the smoothing cap arrangement in the voltage doubler circuit for main B+ that runs the whole set. I actually had some identical new old stock filter caps which surprisingly reformed to near perfect so I installed those, they should be ok, generally I'd just put new ones in, but in this case I thought I'd try them and see how things go. I will replace rectifier diodes but for now they can stay there.
I think my next move is to replace all the electrolytic caps that are still in place and there are about 1/2 a dozen or so.
Since the original speaker and output transformer were missing I connected another speaker that had an output transformer with it and tested the audio side and thats working fine too, there's no video buzz or off tune noise and sounds good, so the alignment has held up pretty well. At least thats something I don't have redo!
That's all for now.