DeWalt Transmission questions

[StevenB]

We've now made the sun gear adapters and built a test drivetrain with 2 DeWalt/CIMs. The adapter works great, except that I didn't account for the small indent in the center of the back of the sun gear. This allowed the gear and adapter to slide up the shaft ~1/8, to the point where it would shift all the way into 3rd gear reliably. A couple of small washers to fill in the indent solved the problem.
I'm now working on shifting software. Are there tricks to making it work optimally? Joe P. mentions the neutral zone and "Software syncronization" - how does this work?
Thanks!