So, I have a Fender black top jazz bass with a double P pickup set up and I put in a pair of EMG PHZ's in it. The first "correct" way of installing them caused major phasing when both pickups were on. Both sound fine on their own, but when the volume is up on both it's terrible. So I proceeded to switch the pickups around, I put them upside down, backwards, neck, pickup on bridge, etc, etc, all ways I could think of. Now I have a set up where it's sounds mostly ok, but still hear some phasing. Any idea on how to fix that?