[GTX JOHN]

My boys put new Dana 60 into Older Kids Car to get him ready for head for Winters
It has a new Richmond Std R/P (Not Pro). It has a 10 spline coarse spline pinion.not the fine spline.
They call and said the old yolk would not fit, I told them to carefully
check for burrs on yolk and pinion--- you Dummies.....they looked over both closely and said
they were perfect. I had them try three more three different yolk.... Both Aftermarket and stock
They said "Dad the splines are about .005 - .007too Wide close as we could tell!!
I had them Freeze the yolks overnight and check the pinion for burrs again. Still no Go!!!
Did we get an out of tolerance pinion?......NEVER seen this happen before but I am starting to think so!
Does anyone have any Idea or experience with this?

I was thinking of Overnighting an Aluminum one/Freezing it/Pounding it on!!
I sure HATE that Idea!!!!