Yeah, the headstock thing is tempting, but I'm not going to mess with it because I've got Phil Lesh and Jack Casady's signatures on the reverse of the headstock.
Today, Matt gave me a sheet of copper that a friend of his who worked at Ball Aerospace gave him to use as shielding. So, I'm going to make a box for the inside to really seal it up from the evil electronic elements.
I'll post samples as soon as I can get this all together. Right now, unless I stand in certain orientations, it's really buzzy.