Hi motomanpat
I would say you guys are luckier than me. When I got mine last December as a Birthday & Christmas & New Year & Chinese New Year present, all the 3 diffs. came with grease.
Now you imagine what you need to do to change then to diff. oil.
All I can remember was the only spring washer that came with my kit was the 04 pcs M3 spring washers and they are for the engine mounting. As for the flywheel mounting collet, it is normal for it to be sitting on the front bearing's inner ring.