I posted here about this a few weeks ago about up and down slack in my yoke on third member. I didn't tow it on my trip because of that. Well I'm back R V made it fine. Question is if the crush sleeve is worn enough can that let it have play up and down. I think that would let the bearing move in or out a little. I'm just wondering if just a crush sleeve would fix the problem. Have not looked at gears yet. Was some metal in fluid I drained out.