I just purchased a Road Worn p bass body with a 60's position jazz route. I bought a set of Aguilar PJ pickups with j hum canceling split coil. Without too much modification, I used a stacked pot for V/V, tone, input on the pickgaurd. The sound is awesome when either pup is solo'd and no hum. But with both pups volume on full, the overall volume drops 50% and sounds like a dying goat. There is really no blend when adjusting the volumes. I've wired over 20 p basses but this one being my first PJ. Any tips to what maybe causing this? I can provide a wiring photo later. Help!