RSF Kobol Expander pot problem

Hi,

Any RSF Kobol Expander experts out there? I've got one here in mostly
working order. The main problem is the VCO2 frequency potentiometer.

The VCO1 frequency pot is working fine (apart from not outputting
440hz when turned to the 440hz mark but that's no major problem).

However when I turn VCO2 right down to the left it should be
outputting the lowest frequency, but instead it's outputting about
100Hz or so, it then shoots up to the highest when turned to the
middle, and then suddenly down a bit and then climbs again as you turn
it to the right. I can control OSC2 via CV fine, it responds correctly
like OSC1.

This sounds like a broken pot to me, but I'm an amateur and wanted to
confirm with somebody else.

Are the pots in the RSF Kobol Expander standard ones or special RSF only pots?

Thanks,
Stephen
--
http://www.skkatter.net