Yeah, I've a simplex that has a pop up adjustable nut on it. It has been my experience that it is easier and simpler to change the whole fifth wheel rather than hire someone to do a rebuild kit. Much safer too. Don't want that trailer falling off. :eek3:

My Jost has an adjusting bolt and nut on the passenger side, loosen the jam nut and tighten it up, mine is very touchy a half turn and it would not lock.1/4 turn took almost all the slop out but mine wasn't moving 2".I pull a smooth bore tank and it feels like its moving 2 feet sometimes, but in reality it only moves about 1/2".When it gets loose enough that I have to push back against the pin to unlock it I'll tighten it up a 1/4 of a turn and I'm good for a couple of more months,between all the slopping around and dropping and hooking I do it doesn't take long to loosen back up.