Hello my name is micha, for almost 14 days have a kz 550 which stood a few years, but meanwhile runs and also got fresh tuv. a few problems we have but still where we urgently need advice from you. it does not run properly, the speed does not go over 5500 tours. we have the old carburettors with pushers, without membrane. down it runs wonderfully, also goes through vigorously. today we drove about 100 km and calculated while refueling w with a sprite consumption of 6 liters on 100km. times to the facts, what we have done so far: gasifier cleaned in the bath, all nozzles are clean. ignition plugs are always carbon black, means that they run much too fat. tank cleaned, filter made in between. ignition cable all renewed, plug not. empty running control screw(side of the carburettor) we have tried out in various positions, no change. gasifiers were only roughly synchronized. if I use the gas rotary handle sc When you open it only to about a quarter and slowly accelerate it then it goes, but as I said only 5500 turns. I have already thought of the ignition coils, which are both defective. maybe you have an idea, I am grateful for every tip. many thanks already in advance. greets micha.