So I have the 3120xp and I opened up the exaust a little. Started it and at full throttle out of the wood it bounces off the limiter at 9300 rpm. Since the high jet is not adjustable does the limiter protect it from running lean? I've never had saw that bounces off the limiter like this one but then again this is only 9k compared to 12k or more of the other saws. Do I need to worry about running the saw lean or am I just overly concerned with my fairly new investment.