New guy here. Been around old tractors my whole life and am working on neighbors "new" tractor. PTO stops turning when against a load. Doing research here and doing my own troubleshooting leads me to believe PTO clutch is toast. Owner has never used clutch to engage PTO. Just moved lever to engage. My fear is that the PTO clutch is given up and I need to split tractor and replace. Any other thoughts or suggestions?