I am having somewhat same issue with 80cc for my Piaggio Typhoon. When give throttle it bogged and died if I don't let go of the throttle. Have changes main jet to 98 and back down to 88, still bogged. Sometimes it would rev/throttle as it should then back to bogging again. It idle great though with size 35 and needle is at most top. I am about to tap out on this.
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