ok, so i am wiring my second bass but for some odd reason no sound comes out. this is the simple Jazz wiring schematic V/V/T. I have used it many times before and it worked from the first time. this time its not working. no sound whatsoever whether hum or buzz. the only thing i can think of is that it has bad pots (bought from Stewmac). How do i test and find out which pot is not working correctly and all that? yes, i have a multimeter for resistence, current, circuit testing and all that. thank you!