I just got a new Squier P-bass (yes, I know, it's not a Fender). The buzz disappears when I touch anything metal on the guitar (the strings, the bridge, the cable jack, etc). The buzz disappears when I turn the tone knob all the way down. It gets louder when I touch the pickups under the bass strings (the one farther away from the bridge). I suspect there's a problem with the grounding of that pickup. I bought this guitar (cheap!) on clearance from a Music and Arts store more than an hour from home, so I'd like to avoid having to drive up there to take it back. Is this something I could fix myself? On the other hand, it should be under warranty- I suppose it would be much better to get it fixed under warranty. Thoughts? Thanks!