Here's some pictures of how I rebuild my Stealth transmission for my RC10-GT.
I use 2 tubs with gasoline in them to clean everything but the cases. Well ok, I clean the cases in gas too but don't tell anyone. The 1st tub of gas is to get the yucky stuff off of everything then I use compressed air to blow it dry/clean..... and the 2nd tub I keep clean for the final rinse, and blow it dry again. (Did I hear laughter?) So..... when you see white chalk on my skin, it's from the gasoline on them.
So there you have it, that's basically how I rebuild my tranny. If you are wondering, I scratch my rings with the Scotch-Brite because I run my diff on the edge of slipping so I don't want the balls to slide. If you are wondering, I run my diff on the edge of slipping because I feel the truck turns in much better that way.
A diff can make the difference between the A-main or the C-main so keep an eye on it and keep it smooth. If you're at the track and if starts feeling crunchy, 9 times out of 10 you can clean the thrust bearing part as well as that side of the out drive while it's still on the truck to restore that smooth feeling. One more thing.... you can flip the pressure rings over and use the other side if (or when) they get a groove in them.