Does anyone know where the fuel mixture screw comes set from the factory? 2 turns out? 3 turns out? I really screwed up my carb cause the screw was too tight to break loose... and now I think maybe I didnt even need to turn it at all? Ive heard that they are about 3 turns out from the factory and that is what I was shooting for? I have a new carb on the way and trying to decide if it would be best to just leave it alone? I will be upsizing the jets to 145/150... Any help appreciated... Thanks