I chased the carburettor through the ultrasonic bath and after the re-installation also synkroniesiert exactly as the manual describes it ! Also the setting I tried after I heard the radiator fan run 2 times . Before removal was the front on 6 turns and the rear on 3-1/2 set it according to the manual both set to 2-1/2 but with Chock only got bad but after it warm true everything perfect when I set them both again as they before the Extension were they jumps with Chock impeccable but bangs in both pots while taking gas. Will the good piece but also not drive to Klummp because when adjusting can also run a lot wrong. I now set the rear to 2-1/5 and the demand on 4 and the Chock makes also flawlessly even the oil smell from the rear is gone, however I have to go to Tüv in July and have thought about the AU.