Try a power conditioner. This is a great buy! http://www.musiciansfriend.com/accessor … onditioner heck get it test it and if it doesn't work return it. if it does not eliminate it, it may reduce it a lot for you. Heck @ 30 bucks I may buy one! Don't need all that, then try this. http://www.amazon.com/Ebtech-Hum-Voltag … onditioner with amazon you know you will have no trouble returning it either. They also have the other one on prime for 10 more bucks but I would see what MF is going to charge you for shipping and compare.
As far as the guitars them selves, Has anyone asked a Tech about shielding? or checking the grounds?
Mal - Well, lady, I must say, you're my kinda stupid.
Mal - Jayne, your mouth is talking. You might wanna look to that
Kaylee - No power in the verse can stop me. BOOK- you're going to burn in a very special level of hell. A level they reserve for child molesters and people who talk at the theatre.