where is R53 located? I guess on tandem board 3, not the main board?
Yes, that is correct. I don´t have my multimoog right here, so I don´t know exactly where on the board it is.
I guess there should be an access hole in the rear?
Unfortunately not. There are some of the trimmers not accessible from the rear. You have to open the synth to locate them.
For me it seems, that the keys come in contact too soon with the force sensor rod, the keys are not fully down, when getting in contact, and therefore I can not really control the pressure.
It feels like I press the keys down 2 mm, and immediately the force sensor is reacting...
Hm. Yes, that seems not right.
Maybe this also could be a mechanical problem, maybe some cup washers missing or something like that. Could that be possible?
Yes, it could be something mechanical, like you mention.