Hey guys. been working on this 00blaster for awhile. i rebuilt it. Put a .40 jug and piston on it. ndthen i had no spark.. So i took off my tors system. now it starts and all but when i start it, its like someone is pinning it. what do i do? Some people say its an air leak??? but i was looking at my carb and when the throttle is in idle position, the needle is halfway open.... how far should it be up the carb? Or is it find where it is?