Yoke far enough in?

It's a truck trans and I have the counterbored yoke that's needed for this app. That shiny part is roughly 1 1/4". The car was on jackstands on the framerails in this pic, and then I jacked it up by the axle, and that 1 1/4" barely changed if at all.
With that part sticking out, and the splineless beginning part of the yoke, there's about 2" of actual spline to output shaft contact.


