We have been hearing a lot of this locally. Because of that I am selling my truck if anyone is interested. A group of us decided this past winter we are all going to get the kits and have some fun. We did for a few weeks until people started accusing us of cheating.
As far as the class itself, just leave it as is. Box stock with bearings. Tamiya opened it up when they said lubricant on moving parts. Ready for a super secret? Tamiya AW grease on the shocks.