Restoring 1956 Willys Wagon

I am restoring a 1956 Willys Wagon. I have run into a problem with the universal joints. My Willys Wagon has the lock strap and bolt style joint. Apparently that
style is not made any more. The replacement universal joint takes the retaining clips on the
inside of the caps. They go one the inside of the yoke. My yokes are tapered on the inside and the clips won't go on.
In order to use the replacement joints, I would have to grind a taper to a flat surface in order to put the clips on. I am hoping someone has already solved by problem.
Everyone says I have the right replacement, but I don't think I should have to modify anything in order to use them.