Cannot align A833 into bell housing!!!!

If it was all together once before, there should be no reason to take .100 off the end of the tranny input shaft. Sounds like a simple case of misalignment of clutch disk. If foggy memory serves me right, the mounting bolts for the tranny to the bell housing are 7/16-14 UNC, get 2 or 3 long bolts, cut the heads off and use them as alignment dowels, plus they will carry some of the weight of the tranny. With the tranny in as far as it will go, one bolt to hold it in position, push on the throw out arm to release the disk to allow it (the disk) to move, wiggle the tranny into position. OR you could loosen up the pressure plate mounting bolts to allow the disk to move.

Good luck!!