Yes and it scared the @#$t out of me. I went from 20 mph to dead stop in 8 ft. I had the header on and it pushed it into the ground and broke a wheel spindle on the way back down. Got bad bruising all over my sternum. The worst thing is, it went straight to a shop, they pulled the gearbox to pieces and could not find a fault. They had 4 mechanics go over it, I went over it and a another custom cutter who is good with tools had a look. Could not see why it did it. Anyways put it back together and back on, did not happen again but I have never forgot it!