Daniel-
I'd be willing to bet Dennis hit the nail on the head. It sounds like the trunion slot, trunion springs, and the hydro linkage all need attention. Chances are they have never been addressed and at forty plus years of age the grease is all dried up. The steel to steel wear leads to what I call "the slop and wobble syndrome". To fix it right get prepared for several (a few) hours of work. Being a nf makes it even that much more fun.
It's all worth it though.
I'd be willing to bet Dennis hit the nail on the head. It sounds like the trunion slot, trunion springs, and the hydro linkage all need attention. Chances are they have never been addressed and at forty plus years of age the grease is all dried up. The steel to steel wear leads to what I call "the slop and wobble syndrome". To fix it right get prepared for several (a few) hours of work. Being a nf makes it even that much more fun.
It's all worth it though.