thanks for the detailed and insightful clarification, paul.
there seems to be only the original pedal that can do 0 - 100k or i'm tinkering with your suggestion, right?
I think I'll try Yamaha FC-7.
a technician here in berlin could do that, i'm not that solder guy. he recently made my polaris fit again,
the keypad contacts are clean now and the main volume control is back again,
the baby sounds really fresh again. i also notice a difference in the envelope curve,
it's not so limp anymore, is more direct (Rev 11).
he has also repositioned your audio noise tip with the earthing of the headphone cables, noise is nearly eliminated!
i have the feeling to have a new synth ;) at this point thank you for your valuable hints!
btw, are there any vector files from the panels?
would be quite some work to vector that from the old panels.
i like the primal panel design (https://www.shotroom.com/i/1963/Pb0Fb) and would like to have it optically adapted with adhesive foil. just would interest me.