U joint to third member question 1971 Duster 340

By that I mean there is alot of play in the bolt holes of the straps with the supplied bolts

I think I get what your saying, once the cap is seated in the yoke the snap rings should center it and the cap fitting snugly into the yoke will not allow it to move once you tighten the strap bolts...........if that makes sense.

A pic would be handy of what you are seeing.