A-833 Input Shaft Help!

I get this call often....put 15 rollers in place...line up the gap in the rollers with the gap in the snap ring. It will slide in from the back. Don't lay it in there and try to push it down in place...slide it in from the rear. Yes the new rollers are about .0008" larger than old ones in most cases...but I assemble 100's of these a year and don't recall ever not being able to get them in place.