I am enjoying your posts and following your progress on speed. I have some health issues at present but at 60+ I am looking forward to 2011. I actually have a speed chain and your tests have encouraged me to look at it again,health permitting, in the new year.
The question is what grip gives the most speed. One former SA convert,who featured on JK LPG tapes, feels an SA grip is not compatable with high speed. He took part in a detailed scientific test and it came to this conclusion. This guy can walk his talk as he recorded 125mph with a five iron.
You may want to try a "few other" grip types just for fun and see what the numbers are.