I too have a hairline crack that had been brazed by some previous owner. I am afraid that although the braze fixed the outside of the cylinder there is still a crack in the internal cylinder wall. The 3 point hitch just bounces up and down. I haven't taken it apart yet. After pricing the parts needed to replace the unit I am trying to figure if there is some alternative. Any info you find or a good parts source would be greatly appreciated! Thanks