I have just been playing my nearly new Duck Dunn skyline (essentially a Glaub). Its a wonderful P bass , and of course i cant leave well enough alone. Its got the Fralin P pickup. So a couple of questions: anyone added a J to the Fralin P? Fralin offerrs an overwind/underwind option, and Im wondering about that. Also, my experience on other P/J's is that the J is really overpowered by the P, unless the pickup selector pan is nearly 100% on the J pickup. Would this mean it might make sense to put a Fralin stacked humbucker in the bridge J position (instead of a vintage single coil J pickup) so it can compete with the P pickup? Then there is the rumoured issue, that i dont truly believe, but keep hearing, that adding a J pickup can actually change the P tone. In other words, people say that the P pickup, when on 100%, does not sound the same, because the addition of the J has sonicly alterred the circuit. I dont know if I buy that idea. Voodoo? Mojo? Science?...But it does bring up yet ANOTHER question: Is there a sonic advantage to having two volume and one tone, instead of the more convenient volume, pickup pan, tone option. Remember, this is a passive bass.... I would prefer to hear from people who have done a modification to the Glaub, or added a J to a P, but any TB "experts" can weigh in on these critical life or death issues!