Hello all. I have two recently new Fender MIM basses, one a P and one a J. both are completely stock, off the store shelf, no modifications. the problem is the G string on both. there is no sustain, and all of the notes on that string on both basses are very weak compared to the other three strings. I've been thru three sets of strings on both guitars, and it's always the same. weak notes and no sustain. the other three strings on both sound fine. any suggestions? the store where i bought them isn't very helpful, all they want to do is sell me a different amp, saying that'll fix the problem. i live in a small town, and they are the only store here. thanks for any help.