ok, i think that is not a problem.
pinion gear maybe try use like SCM-21 steel materials with "Heat Treatment" process.
we have alot people convert X1CRT to BL with stock steel spur not problem.
gear not eat and great.
it's look like
Here is some driver CRT stock gear clip.
http://www.youtube.com/watch?v=sajULgawAgo
so i think maybe gear is not a problem , this CRT.5 can more easy to convert right?