Picked up a new amp today for my SB-2 (Got a good deal at Guitar Center, floor model Fender Bassman 250/210 for $450.00) I am noticing a slight buzzing noise when I am not playing..it goes away when I touch the strings, the knobs, the cord, etc. I assume this is some sort of grounding issue..? I can take some photos of the wiring, if necessary, but I am thinking that maybe this is 101 enough to get help without doing that.. When I looked under the hood when I first got it, I noticed that the ground wires from the pickups were held together with a clear plastic tubing and just dangling like that..this seemed weird...thoughts, advise? thanks in advance and happy fourth of July everyone!