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Good afternoon Gentlemen, I've been exchanging specs with 570biker. I have been tinkering with the a Nibbi PWK28 carb. finally got it running great but after it been sitting for a while I'm having trouble at wide open throttle on 3rd and 4th gear. mainly 4th. It runs better without the filter (aftermarket). Its got the 125 Pilot Jet, 35 Main Jet, 2 turns out and 1 turn out the Power Jet. Main needle at Position 3 (Middle). Nibbi performance coil, NGK spark plug, GOOFIT AC 6 PIN CDI Box for vertical engine.. which by the way made a helluva difference.. I ordered a manifold I have not installed yet, which will place the carb like OEM did, I'm thinking the distance from carb to engine may be the culprit.
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