86-93 t5 driveshaft

I thought the driveshafts were the same for 87-95 with T5 or auto. :shrug:
Could the splines on your aode driveshaft yoke be damaged or gauled? How much further does it need to go in to be able to bolt it to the pinion flange?
What I would do is swap the slip yoke from your old T5 driveshat and put it on the aode shaft, if the T5 one went all the way in without a problem. It should fit since they used the same u-joints and all.