My C clip did not fail. The bolt that holds the pin in broke. I do have a line lock. I think I bent the axle and broke the bolt and spider gears when I was drag racing last October. I broke my clutch master cylinder and had to tow the truck home. I pulled the motor to replace my loose pistons. I didn't start driving it till February. I never went over 4,000 rpm until it was on the dyno for tuning 3 weeks ago. Thats when I saw the bent axle. I was lucky the magnets grabed the broken tooth. The company is going to cut the ends of the axle housing off and rebuild them for bearings to hold the axles in the housing. I will be taking the axle to them bye the end of next week. I will take before and after shots and let everybody know if this works or not. I will keep Tony up on everything so he can put togeather a kit for everybody else.