I bought a Tusq nut on Ebay, and installed it today. I was pretty nervous, but it was very simple. Unfortunately, I dinged the fretboard a little on the side. Nothing big, just a scuff.
Since I had the strings and bridge off, I decided to take the mute off for now. I've tried and tried to get the bridge posts to stop buzzing on the mute plate, but nothing worked. I got really frustrated with the whole thing. I was going to suffer an early death if I kept messing with it, so the mute's going in the case. I'll tinker with it more later, but I really want to play this thing! The buzz has totally turned me off, so the guitar has sat around for a month.

I played it for about an hour tonight, and I reaffirmed why I own a Jag.

The both pickups on setting is the sound. Also, the trem on this particular guitar is nicer than any of my Jazzmasters.