I have a '00 MIM Fender Jazz V that was modded with passive Bartolini pickups. I have heard so many good things about them, but I am completely underwhelmed by the ones that were installed in this bass. Volumewise, they are at least 25% quieter than any other bass that I own. I don't know what exact model that they are, but it seems like all of Bart's 5 string Js should be really good. I was expecting different tonal qualities from a split P but not that much of a volume decrease. I'm not an electronics guy, but I can't afford to have it looked at so I have to try and troubleshoot it by myself. Any suggestions where to start? Could they be wired wrong? just dead, maybe? Help?