Originally Posted by rayhuang

Its been awhile since I raced, BUUUUT I recall a box of different tooth spurs and having to chnage spurs when I felt like I needed to run the car low (and make those tiny rollout chnages to keep up with tire wear). if not you got to clean a spur gear full of paragon and track goo after every run. couldnt be good for the motor and runtime too.