[Yamamaya42]

Meaning I got the wrong cap, as the documentation / schematic is radically different from the set.
Not sure if I should even touch the area.

This is getting very frustrating trying to work out how the sync section is wired, it seems to be the opposite configuration as shown in the schematics, where the schematic shows a positive tied plate and negative cathode, in this set it's opposite, cap (mica) and resistor values don't match documentation, there are more resistors than shown.
I'm hesitant to touch any of the mica caps in the sync area no, as I'm not sure of their value, and if I was to move them, it may make things worse.

Specifically C156, that seems not to be 180pf, but 82pf, C155, which is said to be 100pf, but is at an angle where the dots can't be seen, don't want to move it.

Another example of difference, is that R169, the link for vert sync from the clipper seems to be tied to the plate, not the cathode, and is 22k, not 12k as shown in the documentation.
I'm aware that they make design changes and such, but I have never seen a deviation of this magnitude before, especially when this chassis # was listed in the documentation.

Hopefully C169 C172 C177 in the h-osc area are not different as well.