Re: WOW ! I thought I was on my own...
It's yoke, not yolk. The bolts on the girders might have worn and developed "Commando Shoulder", like the early Isolastics did. I knew somebody who sold his because he couldn't pull it apart to put new shims in.
The problem you will have is that the forks will flap about like a good 'un if you refit with worn parts. I think you will be performing surgery just to be on the safe side.