Slip yoke will not slip on...

I have run into having a main shaft longer than another......it was a doug nash 4+1 rebuild, (snapped a main shaft believe it or not) but it happened to have the same symptoms after putting a "new" one in. Apparently the one that came in the trans (used) had been cut down. I put it in my car, measured for driveline, and went racing. Broke it and replaced. "new" one was 1/4" longer.

Probably not your scenario but you wanted mary ideas :poke: :D

pictures wont help but they make things interesting.