Pilot circuit and midrange

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flatslide

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Joined
Jan 8, 2010
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new jersey
My MAX came to me wearing a 2.5 inch competition kerker baffle. I recently switched in a 2 inch kerker baffle, in an obvious effort to cut down the roar. It's no longer obnoxious loud, in terms of neighbors ears.

It seems that I will need to re tune a bit to compensate for the exhaust change. My 50 mile away from me favorite tech, thiks I need to adjust because I also removed 110mm v stax in favor of 30 mm ones. It was the knee factor on my VGAS set up. So here's the crux:

My tech suggests leaning out the pilot circuit, and midrange. His hunch is the plugs are building up carbon, and the bike is beginning to hiccup. How is this leaning out done for a beginner? I've gotta check the plugs and replace them with new. BTW the 39mm Keihin FCR are the carbs in question. Any help is appreciated.

Alf
 
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