I know I'm very late but wanted to express my appreciation of this awesome video. very thorough.
It was very helpful as I'm renovating my Revo S.
After I lighten up the guts, and swap the spool. It should be a SKT with 24lbs of drag.
only downside is that completeness can take time. I might reccomend breaking future videos in multiple parts. Then it could be navigated easier.