The volume/focus control has felt wrong since I got this set. Now I know why. The rear volume pot&switch had separated from the wirewound focus. Luckily, all it took was threading the tabs through the slots and bending them over again. I'm really happy about that as it's a hard control to find.
My other set with this chassis has a horrible repair job where there's only a volume pot up front and the focus is now a separate control in the back where a new hole was drilled
If anyone has a combo 1500 wirewound (focus) + 250K (volume) + AC switch control they don't need, I'll take it of your hands
I've found one blown cap so far.
