Jost rebuild parts

Well new pins and bushings aren't expensive. Neiborhood of $50 iirc. I changed mine out about 2 yrs ago and they're getting stiff again. You need to be pretty good with a sledgehammer to get the old ones out though. My jost had a bit of slop from day one with worn kingpins.

 

Re-bush it, if it can't pivot freely not only will it beat you to death, but if left unattended long enough you will eventually crack frame cross members, and possibly the frame rails themselves.There is an adjustment bolt on the passenger side of the plate, loosen the lock-nut and turn bolt to tighten, Doesn't take much, 1/4-1/2 turn is it or it wont lock on a new pin. Also do not be afraid of the grease gun here, the more drop and hooking you do the more grease you will need.