Best 904 rebuild info.
This has been posted here many ...............many..........times.
WHAT YEAR are we talking about, as the earlier 'cable drive' stuff has their own little tricks
start here
http://www.forabodiesonly.com/mopar/showthread.php?p=1969892414
I don't know "how all" you an save Youtube videos, but I use firefox browser, and an add on called "video download helper"