Crumar Musical Instruments User Group.

jason,
    i wouldn't know how to go about fixing it without a manual, but you can order a tech manual here: http://members.aol.com/DBmElect/crumartm.html
good luck. i play a performer myself and i absolutely love the thing! it really doesn't have crazy noise versatility or anything but it is such a lush, full, pretty instrument. i love it. it
can't be very hard to fix, they are a pretty basic machine.

reed