I have a Digitech Bass Chorus that I mentioned in another thread, I ordered it second hand, I fixed the battery cavity pins, and replaced the footswitch mounted to the PCB, and the pedal comes on, which is a start. The PCB looks to be in fairly good condition, if a tiny bit dusty... however, there's one place where it looks like a resistor has had it's place swapped (there is a hole in the PCB which looks desoldered, and the resistor is going into a new hole right next to it) But now, the problem... The sound I get from it is almost unchanged when I turn the pedal up. With all dials turned up, there is a very very weak warbly sound, but it's so weak that I didn't notice it the first few times I tried turning it on... The knobs do basically nothing, except speed, which seems to make the biggest difference. Does anyone have any idea what's wrong with this?