This is why my diff locked.
Even though I put loctite on that screw and did it up as tight as I could without feeling like something was going to strip, it still worked it's way loose for the second time. Then it starts machining the housing, until it jams and then locks the drive train, causing my car lo front flip...almost.
Luckily it locked while at full speed with only 3s and not 5s :026:, that would have front flipped.