Any tips on pulling motor and trans together

The answer to part of the original post about separating the trans from the engine safely is this.

Get them both stable remove the flexplate bolts.
Slide the converter back toward the trans.
Pull the bell house bolts and separate.
If they are stuck, chk for any belhousing bolts you might have missed and then what I do is just give the trans tailshaft a good sideways thump with the palm of my hand.
Make sure that converter stays seated in the trans pump all the while of course.

Take a half inch box end wrench and put a bolt through the box end and put the bolt through a bellhousing bolt hole and put a nut on it.
you'll find the wrench holds the converter in while moving things around.