[jwasbury]

I've re-united trans with engine a couple of times. It can be a bit tricky. As Ken mentions, the key is peeking in that access hole to be sure everything is lining up. You have two variables you must work as the trans and engine are being pushed together: 1) the angle of the release fork (which you can control from the bottom of the trans by keeping a hand on the splined shaft), 2) the position of the "tangs" on the throwout bearing (which you have a partial view of from the inspection port at the top of the bell housing).

I think this is a two person job. One person controls the release fork angle and using a screw driver insures the throwout bearing "tangs" are positioned for the two parts to correctly interface. This is the finesse job. The other person is the muscle - pushes the trans around. That throwout bearing really wants to rotate, and if the position of the tangs is off by even a little bit, the release fork arms will push them out of position. Since you can only see the top part of the throwout bearing tangs from the inspection port, its not always obvious if the position is correct.

Good luck