139QMB 80cc BBK Install Issue

[Thach2264]

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.