Does it hurt performance to run the air screw 1/2 from all the way in? I have adjusted the air adjustment a quarter turn at a time in/out, ran the bike for a hour or so and then checked the new spark plug for "health". Performance and spark plug health is the best 1/2 turn out. I don't mind dropping the needle clip, but it is a pain getting the carborator out with the moose spacer on the carborator. Should I be concerned?