So acording to your theory, if someone goes from 3.23 gears, 26" tires 1:1 @ 6800rpm, to 5.33 gears and the same tires...everything else remain the same, he will be snapping the driveshaft ??????

Or is just the longer DS as in AVEs, CC, EC tend do to more flexing at higher rpm?

Have you made some stats of how many RCSB have this problem, compare to the others?