One thing I did on the front position was run a cap to a trim pot,and turn it until the desired treble was gone.....I then superglued the pot and taped it off.
Here are some samples---I also put a push/pull pot for the tone to choose between 2 different caps,so I could get a cocked wah sound or regular tone pot.
This was a take on a great mod by Mark Davis.
Forgive the playing---
http://www.soundclick.com/bands/page...songID=4309597