one is a shit. for a few days now my thick one spins. it jumps great at and in the stand gas also super run. however when accelerating (always at a certain speed) spits, jumps and cuddles, plows out of the carburettor. when I give really gas and the speed range is overcome, it goes as always. takes normal gas to us runs to the normal peak speed. the error always occurs in the lower speed range. I have already excluded: ignition coil, Ignition cables and candles. there is no leak or water in the carburetor and it does so with or without air filter. a adjustment of the ignition (to the right or left to the starting position) has also not brought any change. my presumption is either a problem with the accelerator pump or partial load nozzle, or the underpressure valve or even the ignition controller. what do the experienced think about it? bb-blue