That wont work, thats a newer slip for the different cut, which is a spicer slip yoke and notice the splines are cut sharp no angle and squared, the older is a sharp pointy spline
Thanks for the confirmation Marty. That is why I posted the link for that yoke, as would conclude the debate as to whether or not the Denny's yoke was meant for the A815, as it was clearly intended to fit 727/A833. This being the case, my issue with the yoke being too loose, along with the one form Denny's being too tight in Michael's 727 can be attributed to incorrect manufacturing tolerances. Mine has PTI cast into it, and it uses the 7260 u-joint. I grilled Denny's this morning, as well as my local drivetrain shop. I am confident I will get to the bottom of it, and will post the results so that all can learn from it. Stay tuned!