I have an '81 G&L L-2000 that was somebody's roadwarrior axe, and the pre-amp doesn't seem to work in it. I have a few options: 1) Fix it 2) Replace it with the preamp from a different L-2000 3) Replace it with something else entirely From what I hear, one of the most often cited complaints about the L-2000 was the non-standard controls and pre-amp. If I were to put in something different, I could conceivably fix that. Also, from what I gather, the pre-amp on that was a treble boost only, which I'd rather have a bass boost. Thoughts?