I just bought this bass and I am having a lot of trouble with the mid switch and levels. I am trying to get a decent volume with out using the mid at all but the ass-end of the bass drops real bad with out using any boost in the midrange. 250 and 500K both. ANd as far as amp settings to compensate. I use an aguilar pre-amp and the tonal knobs dont really get violent so dialing up the mid on the amp doesnt really do much. any tricks would helpful.