Ok Seymour Duncan experts. I have a Washburn XB 900 series bass with a Basslines MM pickup and 3 band eq. My questions is what are the 2 mini pots on the pre amp board for? One seems to be a bass boost the other might be effecting the Slap Switch sound, but its a pain to adjust and play and I am having a little trouble descerning the differences. I went to Duncans web site and its obvious their big money is from guitars, not a lot of info on Bass pick ups. Atleast where I looked. Any advise is appreciated.