Hello, I bought a used spin GE 50. ( 2 measure separate lubrication ) The mileage of the scooter is 2800 kilometers. It stood a few years in the dry. After it did not jump, of course, I changed the petrol and cleaned the carburettor. I also installed a new battery. I cleaned the air filter and also closed it properly so that it is tight. I also installed a new spark plug. It starts now. I then looked and with my finger almost kept the intake nozzle of the air filter. After that I was able to bring it to full speed without any problems. Now I have closed about 80 percent of the air intake with package adhesive tape now the scooter runs loosely 45 to 48 kmh although the distance ring is installed. But that’s no solution. Has something happened to you before? I already tried a new filter mat, but it allows for even more air. Please send a greeting from Berlin for ideas or solutions.