Hey all. I have a MIM 50's Classic Strat, with the stock 50sish pickups. It's got some serious hiss going on. It dies down slightly when you touch metal, but not completely. It actually gets worse if you go to 2 & 4, and I've noticed recently if I roll back the guitar's volume to 7-9 the hum just takes on a "deeper" "tone". The grounds seem fine. I went in and added a touch of solder to them for coverage, this didn't seem to help much. I went ahead and copper shielded the pickguard and cavity. This did absolutely nothing. It gives me the same noise in every amp I own - battery or wall/mains powered. Any ideas left?