Regarding that engine:

"Standard threaded shaft (must be cut for use in T-Maxx)"

Stats sound good. But be careful when cutting the shaft. dont wanna mess up the threads!!

I had a guy who badly messed up his motor. On top of that, I think he had some sand inside his engine because he never did get it to work after a new piston/sleeve. Thankfully he only paid like $40 for it because of some deal.

anyway, when you take your engine apart, I would spray it down with Brake cleaner.. or something.
WARNING: Solvents will probably dissolve grease in the bearings!

Ram
ram