hello and I have the following problems. my audio suddenly started to fluctuate in the empty run from approx.900-2000 turns and when I had a passage in it it accelerated by itself and braked off alone. when I had stuck the plug from empty run control valve and had put it back on it he ran. then I changed the empty run control valve only did not stop for long and the speed fluctuations started from the front. and that is stupid the empty run controller is not cheap. only when I switch off the engine and start again the problem is gone and then starts up again at some point. does anyone have an idea what that could be????Is that maybe the throttle valve pot??? and then I usually still have the problem that it starts badly and sounds like it’s going out some seconds even though I have set the ignition only after I have sold out cap, fingers and candles?? many thanks already in advance?