The pto on my 270 hour 20G would not turn. I could not figure out why but I did try adjusting pto lever and over filled transmission oil with no change. I took it to a gravely dealer who said it was the pto clutch. After spending $1760.00 ( parts were $928.00 ). I was shown the old clutch cone which had no trace of any lining on it. It has several large gouges on the surface where the lining should have been. I was told they found no other broken pieces in the transmission and had no idea what caused this. Does anyone here have an idea of what could have caused the gouges? Also they did not replace the 2 clutch cups, which in my opinion should have been replace due to the clutch cone bearing damage. Is my thinking way off base here? I tried several times to talk to the mechanic but I was always told he was not there or too busy. I just do not want to replace the pto clutch in another 270 hours. I will appreciate any theories on what may have happened.