Lucky me just got my Avid drivers in the mail today, I plan on taking them into work tomorrow where my power claw is and really looking at what the potential problems are going to be. I personally dont understand why the track would be driving off the extrovert teeth at anytime, except during ratcheting. Is it because the introverts are not much wider then the base of the extrovert teeth. Either way I will look tommorow, I must say that the sharp as burr on the metal rings of the drivers from Avid, just about pissed me off. How hard is it during manufacturing is it to hit those rings with a grinder and deburr it. Since I am a sheetmetal worker, I can tell you that it only takes about 15 seconds per ring.