Hi all, I rbought a Schecter bass six string and I like a very very Tripoli sound. Because I play a lot of slack. So I will typically leave the EQ controls on flat except for the highs. I will turn those up on the way. Thing is, I do get a pretty nasty 60 cycle hum. If I move the base around like lay it flat or in playing position the sound will change in volume. I was wondering if there are any pick ups that I can switch out with to correct this issue? I believe that this bass comes with passive pickups and in active preamp.