Hello to all I’m at the end of my knowledge. Maybe I’m too stupid maybe I didn’t think of anything maybe what I know. It’s about my daughter’s scooter. Current problem under let spins he doesn’t move more than 6000 moves forwards or like a lame snail. In a stand and without load he runs wonderfully turns up to 9000 at 5500 starts to close the vario. All top. But as soon as he starts driving away the power is gone. The before story he ran with the the same set update of the same settings already his 55 km/h mountain descended on mountain. Until the day when he just stopped after 10 minutes went on again. Then he ran another day and went out and didn’t want to jump any more. Until two times where he jumped and just ran up to the hit high. It turned out the piston had probably clamped and was fuller called. So new cylinder. The anyway new carburettor cleaned all seals new. Since I had the suspicion that he was next air All together built up and checked whether it pulls next air. Everything close. In the standing gas it runs well. Since it is a replacement carburettor the nozzle sizes are unfortunately not there. But the 46 nozzle from the original carburettor is not running too fat there. With the nozzle from the new carburettor and needle at the bottom it runs clean in the stand and takes the gas neatly. Only as soon as let comes it collapses. On straight it torments itself at 18 km/h. Did I really lay that it runs too fat? Or do I see what it is ? Greetings Bastian