I use mine all the time, and it does stay where I put it. I have my idle set so low that there is neither enough air flow nor water flow through the radiator in really hot weather in slow, stop and go traffic, so I crank the speed up with the hand throttle. I also use it for fast idle warm up. I push the choke in immediately when the engine starts, even in the coldest weather, and only use it temporarilly when the engine balks on gear changes.
