Cutting off every other tooth has seem to free up the drivetrain and not hurt the durability of the belt. As for the new belt system all I can say is that we are always testing new things. If we(TL) feel that a new product that we are testing is better it will be released to the public. Its like the new BK Bones that we are in the midst of developing...as soon as we perfect them they will be available to all racers.