THANKS GUYS. I HAVE BEEN RACING SEDAN FOR A WHILE NOW BUT I'M GETTING INTO 12 SCALE. WHAT I WAS GETTING AT IS WHEN I RUN THE MOTOR SETUP FORM MY SEDAN ON MY 12 SCALE, I ALWAYS DUMP. SAME FOR STOCK. WHAT I DID TO MY 19 TURN IS PUT LIGHTER SPRING AND CUT THE BRUSH AND IT GAIN A LOT OF RPM AND I DIDN'T DUMP.