Hello you love I recently bought a roller of the brand HSUN, model HS150T-2. The scooter ran at handover, but was empty from the filling level. So on Friday I went to the local Raiffeisen gas station to fill up. I refueled Super Gasoline, no E10. The next day, after driving home he jumped and drove, but as soon as he was a little warm he has speeded down. What do you think it might be? I tap on the spark plug, but I’m not sure what it is. I’m very grateful for every tip. Best regards, Patrick PS: it’s a GY6 engine.