I have an early Kustom J595 "Frankenstein" bass head, has very low output, and some distortion in channel two. My tech (who has always been extremely competent) says he can't find a schematic for this amp. Everybody has told me that these are early versions of the 200 series, he says it me a lot less power than that. I am positive there are people on this forum who are experts on these models, can anybody send me in the right direction for a scematic?