Hey, I got a Baotian BT49QT12-C1 4stroke a while ago. the following problem: The scooter had been a lot in the bucket for quite a while -Rossed carburetor I New built-in + suction socket -Rossed exhaust I New built-in -Complete electronics on the steering wheel crispy defective I Complete renewed + new speedometer + shaft + screw -front brake container empty and baked I Except on the disc everything replaced -Rost in tank I New built-in including petrol filter and d Cable -eated V-belt I New built-in + New Variomatics weights 4G vacuum valve defect I Renewed simultaneously with tank -Zündkerze defect I New built-in Now I’ve already done a lot and changed the scooter also starts with e-start and kickstarter and stays on even when I give gas turns that rear wheel. If I take the scooter off and give gas I can easily hold it back even mountain on it does not bring a very high number to the speedometer max so 10kmh with moderate incline should therefore not be a problem. On the straight pulls with ach and krach to 30. Maybe who can help me here because I am really at a loss. MFG Justin P.S. The valve play is set at the inlet and outlet to 0.1mm.