Hello, I have replaced the gear on the main motor and the two small ones (change of direction and ?). However, I don't know the exact position of the gear on the flap. More important is the position of the gear between the turntables. In the service manual, part number is 248. After assembly, the cassette cover (ejection) works but the motor doesn't start. Neither forwards nor backwards. Both drives have been revidiert, but both are malfunctioning. Can anyone help? I found a video on YouTube, but it doesn't show the important information. Thank you very much.