yea, what benny said.
I don't do much of the clutchless downshifting, that is really hard on the motor and gears. In the old days when I was a wee lad, I used to bang them down while motocrossing, but I tore the motors apart all the time so it didn't matter. never did grenade a gearbox but came close and locked a few up, just long enough to lose the race and have to let her cool be fore I could get it out of gear and then restart the motor.
