7” electrostatic set deflection shortcomings

[Yamamaya42]

Bandersen has many videos on u-tube about e-sets, I have little exp in the subject, having yet to finish the T-TONE 149 I got this year, working mostly on tape decks.

The vertical section will always be more fussy when it comes to parts out of tolerance, so it's always good to check it end to end with a very discerning eye, and if any doubt, put in new known good parts, and especially if 2 resistors of same value are linked, like are on the control plates, sample a few, like 10 and pick the closest match, it will help with linearity.
And do watch his videos, they are very helpful.
bandersentv - YouTube