Moin all together I built my El together again. At the first test run the speed fell only very slowly. Then I disassembled and cleaned the carburettors. Membranes are all OK no cracks and all very soft. All sliders are very smooth (up and down). When restarting again the same went down to the speed after giving gas only very slowly. Machine is warm and Choke is already gone. Gas grip and throttle flaps fall back immediately or are closed if What can be the reason for this? Thanks for information Fieti