Slip yoke question

[ShinyC10]

I installed ridetech’s bolt in rear 4 link. Everything is “preset” according to ridetech when it comes to the link bars and all the factory holes are used for brackets. Some how my driveshaft is sitting further back than before. They said they have no clue how that happened. All my measurements matched up to what they say it should be but somehow the slip yoke, at aired out or up, is an inch or so out of the transmission now.

My question…is this okay? If not, can i just buy a longer slip yoke? 700r4 trans