Ok .. So I bought this 1998 Warwick Fortress Masterman 5-Strings bass with a NEC Twin J active pickup last week. What can I say, I got some serious GAS for a 5 stringed bass, not many where for sale, I just went out and bought the one that wasn't either low budget or high budget. My first bass ever and I have no experience with active electronics. All my guitar are of the simple passive breed. There is something that is not quite right. While it works most of the time, there are two things that are not quite right. 1. There is a push/pull function on the volume knop, that doesn't do anything, it seems. 2. Sometimes the signal fades, tho it is sporadic and I can't recreate it. So I'm suspecting that the electronics have seen better days. Question is what should I do.