Im about to lose my mind, Obviously GMC/Chevy had a bad batch of hardware or something in the late 90's I was re installing my Opti after having done a few things on the car. Set my Trq Wrench to 106 in-lb and one of the bolts snapped!!!! I about lost my ****, its been a long time since I've lost my cool. The same thing happened on one of my Cam Retainer Plate bolts when I did my cam swap over a year ago. This ***** gotta stop! This is not the same Trq wrench I used last year so I dont know what the hell is going on.