You guys are lucky if all you did was bend your lift linkage. I just fixed a tractor. The guys was blading in reverse with his boxscraper. He hit a stump, probably at high speeds. Yes he bent one of the lower link supports. But when he hit the stump his lift arms were actually forced down against hydraulic pressure, because his arms were not all the way down and the mechanical pressure on the upper lift arms and shaft actually shoved the piston rod right through the piston on his top deck. This was on a Kubota L4610. Unbelievably he didn't damage the top deck or cylinder too bad, so we honed it out and replaced the rod and piston and other seals necessary due to disassembly and his parts expense was only $70, of course the labor was over $500, but he got off lucky, if he had damaged the top deck or cylinder housing it would have cost $500 by itself. So don't push with you three point arms. Only pull.