The really interesting part is when you start talking differential surfaces based on injector spray pattern and direction. I've seen some ports where the roof is a perfect mirror, the sides a moderate polish and floor fairly rough, and they made ridiculous power out of the motors. Smoke and mirrors to distract from other secret modifications or a direct cause and effect, no idea, but it sure looked like it took a hell of a lot of work!!
Back to transmissions, I've been reading a bit and I think I've found a trick I'm going to try out to strengthen everything, further harden the exterior of the parts, removes the stress concentrations, and give them superior oil retaining ability. Waiting on a quote to disclose more, but it should be attainable and add some extra insurance for the future.
