If it's running good, and still smoking alot, leave the needle where it's at. I know mine is actually richened from the factory, at tank 2-3 it was getting around 270, so I brought it back to 220-230. What gearing are you running? Is it a Revo 3.3 or a Revo with a 3.3? (Is it extended basically) Um...Stock tires? Do your self a favor and get a pull start and glow ignitor when you get the money.