Hello guys, I need your experience Have a City-Leader 50 from Alpha Motorshttps://www.alpha-mobil.com/…/…r-cityleader-50-ccm-45-kmh-rot.html I bought it with 16km and drove it on it today almost 50km. I noticed that if I drive at the same speed (so give 1/4 gas and then leave everything the same) the scooter gives gas and then goes down the speed again, then up again, a kind of jerking you could almost call it… Is that normal with a ne uen Roller? Maybe wrong fuel in it? I know it has to be gently driven in, is it because it barely ran? Who has experience with s,owas?