Yeah, I think mine was more the exception than the rule. Apparently they have changed the flywheels on any new clutches to completely eliminate the possibility of it happening, but I still believe it is pretty rare for it to happen at all. There was a few on cummins forum that had it happen, was actually where I heard about it, but that's only a few people out of how many that are running aftermarket clutches. And it's not only southbend either, one of the other guy was running a valair clutch.