I’ll see about hauling mine out to confirmOkay, well darn... That means that all three of those pots need to be replaced. Yowza...
They're working otherwise, there's just no longer a center detent. There's the hint of one for the blend (which is the bottom knob), but nothing for treble/bass.
Crazy to me that the exterior could be in such amazing shape, but the guts are kind of a mess.