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slow return to idle

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quick question for anyone who might have a suggestion. I have an 01 wr 250 with a yzf pipe on it. the jetting has the jd kit with a 180 in and clip 3 from top. i have tried many different settings and this one seems to have the best power and most throttle response. the thing is its slow to return to idle once you rev it it takes 6-10 seconds to return to idle. if anyone has any suggestions that might fix this problem i would apprectiate it.

thanks

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Yes, the idle mixture is probably lean. Your needle setting is normally used at 6000-9000ft elevation. The fuel screw will need to be turned out or a ~#45 pilot jet will be needed.

Thanks,

James

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