gotcha, i was just under the impression tracks did it that way just to give the little guys more seat time and so they could keep the same weight on the kart, but what you are saying makes sense. But then I'd ask is that the way we slow the rookie down as the OP asked? Seat time for youngsters is the ticket and I fill like as a paying parent tracks should offer more seat time for the little ones. I know some people will say well thags just more classes added to the line up, but for someone to pay the same pitpass price, parking price, and only get one race jist doesn't seem right." i know its America and life isn't fair and we make our own choices" Just seems they could give the little ones more seat time. Now for the OP question I'd say throttle stop on carb would be definitely something someone should look into, the gear rules, most tracks set are still fast for the new new rookies when someone figures out how to free the motor and crank it well above the rpm range. The track should maybe separate the new new ones and implement the throttle stop, untill they can show consistency, and kart control then they would be able to race with the actual rookie class. Just my opinion which isn't worth much! lol