i've been waitingyou brother, everytime running car everytime i confuse about too lean or rich...still same LN 2 1/4 out, HN 1 1/4 out with smoke from exhaust..but when i put the water (1 drop) on cooling head, it is not boiled but it smoke...will this be ok brother....and from the fuel tank when i refuel it there is a smoke too..., and when the engine is stop i saw on the fuel tubing, the fuel is back to the tank from carb...