I had a bog right off idle so I took off the carbs cleaned them out checked all the settings, sync'd, and adjusted the airscrews. Still I slight bog, but not as bad. Here's the question. If I let it idle for a few seconds and them pop the throttle I get excess white smoke out of the left pipe. Also if I put my hand behind the exhaust at idle the left side doesn't really have much of a pop to it at all, compared to the right side. Any thoughts? I just traded my YZ450 for this and think I got taken! BUt it's mine now and it has to run right.