I've got this fantastic 1981 Ibanez Blazer bass that's almost perfect, except for some wiring problems (sound cuts in and out, I've been able to determine that it's not a problem with the cables or amp I'm using). I'm thinking it's probably time to replace the input jack. Unfortunately, it appears that this hasn't been touched in all of its 25 years, and the nut is stuck to the threads. I've tried WD-40 which has not helped, and at this point the threads are spinning along with the nut independent of the rest of the jack on the other side of the pickguard. Unfortunately, it appears that my only choice is to break the jack in half, but how? there's the nut pressed firmly against the outer side of the pickguard, and there's a washer pressed firmly against the inner side. i really don't want to wreck the pickguard since it's a discontinued model from 1981, and that would severely lower the resale value. Not sure if there's any advice that can help me at this point, but if anybody has any ideas I've love to hear them!