I have an Ibanez SR705 and I have replaced the preamp with the Bartolini NTMB. I am now looking to upgrade the pickups. I am looking at the Bartolini MK5CBC dual coils. Has anyone here added a coil tap switch to their SR bass? Is there any way to piggy back on an existing control ( in the form of a dual function knob) or do I have to drill a hole and add another switch? If anyone has added another switch on this bass where did you locate it in this already crowded control cavity? Also, I am looking at the Barts because, first, they are the obvious step up in this bass and second, because of the versatility the coil tapping will add. Are there any other pickups I should consider, specifically any that might add a somewhat more traditional sound to this bass and preamp? Thanks for your comments.