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Jetting driving me crazy! Please help!


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Hey everyone, I just got my bike rebuilt and went to a ported 4 mil. The problem is I can't get the jetting lined out. Any help will be appreciated. This is what I got and where I'm at. After several tries I got the idle and 1/4-3/4 throttle good. It's wot that I'm having the problem with. When I'm cruising along and hammer the throttle it's like there a big lag. Like the bike doesn't build speed or rpm. Then when it finally pulls powerband it's starts to sputter then clears up. I just dropped down from a 320 main to a 310. Noth much difference. I'm afraid to go lower without someone opinion. 1200 asl .20 over 4 mil with agrees ice trail port uni pod stock carbs v force 4 reeds fmf fattys. Any help appreciated!!!

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