Haven't did a burnout yet and decided to do one the other night. It easily laid "a" black mark as black and long as i wanted to. However there was only one. My window sticker says it haves a 3.73 limited slip, but come on. My dad has 3 f350s and they all do the same thing. I have a f150 fx4 with the same 3.73 ls and that thing will leave two equal black marks. What up with this??