Just went thru this for a friends wife. He pass away and she was getting rid of the rv. My friend had damage his tow bar and he repaired it himself . Found some paper work where he order some new seals and pins but the worse part the rod he had x-rayed and it show crack no just a few but many and the main part with many cracks it self. He had taken the unit to the machine shop and had the rods straighten and had been using it for years that way. I was shock that he spent over half of what a new one cost to jerry-rig it. I took it apart and put it piece by piece in the re cycle bin. So buy have the one you are looking at x-rayed and go from there.