thanks ,but finding a 3rd tech around here sounds like a real drag ,plus the caps r really old aren't they? isn't it about due? what happens when u change caps? what r the symptoms that tell u it's time to change them ?does it ruin a vintage amp like a jcm 800? does it sound better ,worse, the same? since my amp is going under the knife ,is there some simple mod he can do to crunch it up a bit more? i'm going for a van halen 1 album type sound mixed with a zakk wylde sound on ozzy no more tears song ,is a mod a bad idea at this point due to the price or the fact that the amp is still acting bad ? i plan on running my amp with a cab with 2 jbl d120f's ,a reissue greenback and a evh speaker .