For years I played an acoustic guitar with a sound-hole pick-up and I used my FZ-2 as a clean boost. Now I play mostly electic blues and rock so I brought out my trusty FZ-2 to use for leads, but it isn't working right. I think the problem is with one of the feedback capacitors in the gain stage, or the IC could be bad. Does anyone have a schematic for the FZ-2?