As for the remaining minor annoying horz issue, mainly the slight fold-over / ringing on the left, there IS a way to adjust it, but it's nearly impossible to do in this set due to the 12 inch screen, and the location of the adjustment, RCA just did not think ahead here.
On the osc transformer, there are 2 adjustments, B2 (on SAMS) HORZ FREQ, which can be adjusted from the back, and B1 HORZ PHASE, which can only be reached from under the chassis.
https://i.imgur.com/oFR1Zab.jpg
The horz osc transformer can be seen here, the metal can at the back opposite the vert output transformer.
As this adjustment is best made with the CRT that is being used in the set, and after all other respective geometry set, ion trap, focus coil and so on, and since it depends solely on the cabinet for safe CRT support in this case, there is no way to reach that adjustment once the CRT is set in place.
It seems that the only option right now would be to cut away a section of the bottom of the cabinet so I could reach in and adjust it, but this will be left to a future date.
As for the nonlinearity, IE, the very slight compression on the L/R sides, not sure if that's normal or not now with the set, the horizontal linearity adjustment DID have some effect, but not much on the extreme sides, however, there are 3 caps I have not changed yet.
https://imgur.com/vrj7U91
The pair of 220pf only show up on the 12 inch FADA version, and I can only assume are there to widen the sweep, and the 56pf in the yolk, these may or may not be out of tol, and who knows what effect it may be having.
But at this point, I deem the horizontal issue a minor nuisance at this point, not worth pulling the thing apart to deal with, will add it to the list along with the retrace mod for something to think about later.
