At this point we were well over 330 passes on this transmission prior to having it freshened up when the Tb went in. I put 8 hard TB passes on it and the wife made 4 footbrake passes this Saturday and Sunday. I'm not too worried about it. We have pushed this 4L60E further than most. The transbrake will let us know where the weak points are if there are any. This 4L60E is not even close to a stock unit.