I play a RIC 4003. It sounds great when I play every pick up by itself. It also sounds great with both of them on the A D and G strings. The problem starts when is comes to the E. Using both pickups, it sounds dead. I know it's not the string, it's the 5th set (TI's flats, at the moment) I have that problem with. Could it be out of phase if it effects only the E strings? Thanks to anyone that can solve this one.