How much material are you guys taking away on the tranny cases? Should i use a dremel tool at low speed to do it. I scraped some of it off with an x-acto knife but the drivetrain is still not spinning for that long. I have already deshielded one shield on all of the bearings and degrased them. Also, I am using two shims on the input shafts right now, should I reduce it to one shim? What else should i do to get the drivetrain freer? Any help is appreciated.