I have the NOS mini controller and I am having an issue with it. At any start % below 60 % the car will stumble off the line. If I bump it up to 65 % or 75 % it seems to be okay. But if I try to launch with 102 pills in my Speedtech plate at say 20 %, the car stumbles real bad. If I try to set it on say 70 % and the track isn't in near perfect shape, it blows the tires. I run 29.5x10.5 tires. Has anyone got an idea what is causing this stumbling problem?