Reply to ADVICE - good deal on maschine but one knob is messed up

Hi,

I can pick up a maschine that is practically new except for the fact that one of the 8 top knobs is kinda messed up. It basically will jump around in midi values kinda randomly. Itll being going smooth 1, 2, 3, 4, 5 and then jump to 120 (as an example). It only happens sometimes too.

Otherwise, the thing works perfect..

I can pick it up for $50.

Anybody believe that:
a) the knob might be fixable? Its not under warranty so id be on my own i believe.
b) that i can get by without this knob? Im not familiar with maschine software yet - its the 5th knob in the top 8 knob section.

Im believeing I cant go wrong for $50 even if the knob is unuseable..

I probably only have a day or two to decide.