Anyone ever used one of these? Here's the story........got a little overzealous tightening the truss rod on my '77 T-Bird last year and snapped the end off. Luckily I had installed a few extra washers under the nut so there is still a stub of rod protruding. After cursing my stupidity, I installed a new nut and carefully tightened it down. It seemed to be OK but I have fair amount of bow in the neck to the point that the intonation is out at the 12th fret, particularly the E & A strings and I can't tighten the nut any more. I left it as is but now I am contemplating a real fix. First off the threads that are visible are pretty buggered up and I can't get in there with a normal die. It looks like the stew mac thread cutting tool would be the way to go. But if I buy the kit, I might as well go all the way and deepen the pocket to expose more rod. Questions/Thoughts - the kit is ~$250 and I'll only need it once so I am inclined to find a repair shop that has one and let them do it and setup the bass while they are at it. The neck to headstock area is so freakin' thin already (hence the multiple T-birds with head stocks snapped off) that I am hesitant to remove anymore wood in this area Recommendations?