I love my Warwick, but I'm not too crazy about the MECs. I'd like to swap the MEC pickups with either Dimarzios or EMGs, and I plan on putting in an Aguilar OBP-3. I need something a little less tinny with better mid-range. My question is, will the knobs be able to accomidate this set up? The pickups are P/J, and the bass has volume, pickup blend, bass, and treble knobs. I don't want to drill any holes in the bass. Also, will I still be able to switch from active to passive? Right now the volume control doubles as an active/passive switch. Thanks for any help.