Its hard to recomend a rollout when you dont know much about the track. But heres how I usualy figure out a new track a roll out of 30 is a good start also keep in mind every motor is slightly different and sometimes can range from a 1 to 2 tooth variance. But the only way to optimize your roll out is to practice and take notes and expieremnt I always find that when I copy someone elses set up I go like crap yes it is a way to get a baseline but what works for one car doesnt always do the same in another.