Putting this on the web to add another data point to a seemingly rare issue. Today my TT Diamond Pro Curved R700 RH, safety stopped working. The movement started getting gritty, so naturally i cycled it back and fourth and it froze up within a few cycles. No damage visible on the outside. Contacted TT awaiting response. The Trigger is stuck in the Fire position, and the weight has not changed, it operates normally otherwise, but i replaced it with another TT Diamond just to be safe in the mean time.