Ive just put a new P pickup in my bass and while 3 strings sound fine, one is very weak and sounds chorused. I first heard it on the G string so i rotated that one half of the pup and now its the D string. As far as i can tell its all wired correctly, there are no broken wires hanging gout of the pup and ive tapped all the pole pieces and they all sound about the same volume. For now ive put the original pup back in but i would like to get to the bottom of this. Anyone with any ideas? I cant really test it as i don't have a voltage meter or any testing equipment, and to be honest im going to send it back and get the company i brought it from to sort it out but as ive not come across this before i thought i would ask.