Yet another 7260 yoke question: yoke/strap hole center-to-center dimensions

So the 8-3/4 differential in my car was pieced together from multiple sources. The problem is, the straps that hold the u-joint into the 7260 yoke seem to be a wee bit on the large side, such that the u-joint has a very small amount of play (I know, not good). I'm thinking the straps are maybe for a 7290 yoke. The straps are date-coded also, and I've read that possibly only the 7290 straps were date-coded, which also gives credence to my notion.

Anyone have center-to-center dimensions for both the 7260 and 7290 yoke/strap holes? I've searched and found lots of info on yoke differences but couldn't find the dimensions for the holes.

Thanks.