Sound-wise, there are no problems. It's about the capacitors used for the POT inputs - they are a single capacity, not switched depending on the SID type.
These capacitors don't play any role in mouse position data transfer, so the "problem" reported by the diagnostic cartridge only affects fully-analogue paddles (not even the paddle emulation that you have with Micromys). With those paddles, you'll have a small offset, but you should be able to get from min to max without problems.
Jens
So this is a common problem and my Sid's are okay?