Managed to damage the VR103 pot on my Duo when I was removing the C133 cap. Thought it was out of alignment but it was permanently damaged.
I had a moherboard from a Super CD-rom that I had laying around. Took the VR103 from that one and it seems to work.
But, its a rather old VR, are there any schematics on the VR, are they the same values and what values are they specified?