Yeah, that new shift control arm your waitin on...there are some posts of an issue I had with mine that arrived with my kit from Hitchcocks, a minor problem that they were very prompt to correct.
The tab that slips into the centering spring(larger one) was just too short to stay in place during shifter motion.
Turns out that some of those shift control arms left quality control @ 11mm instead of the needed 14mm, you'll know if you have a short one if it "barely snags" on the spring.
You're really gonna like your bullet more when yer done with this upgrade, I know that I did. Happy Turnin.