Hello you love In March my big 15 years old and wants to ride Mofa I just set him up a hardware store scooter. Technical data Nova Motors Model: YY50QT 25KM/H Version BJ 2015 about 3000 ran To the problem If the ride was jerking the scooter, he sometimes also does not take any gas. but the whole does it only when the electronic throttle is connected. Without throttle the scooter drives clean without problems The scooter is completely original there is no tinkered it is from factory over a pickup speed limiter Mofa 25 kmh throttled the pickup sits in the vario box and measures the speed over the clutch bell, the pickup is connected with the CDI. The pickup as well as the cable is perfectly ok! Mansche told me that it is normal for such a throttle that the scooter is jerking, but I can’t imagine that my wife has exactly the same scooter from the technical point of view only in retro design her scooter has the same throttle and the scooter jerk Not a bit