i have been reading up on the moki gas engines and have found that they are not made by moki in hungary as the good engines are.they are made in germany by a company using the moki name as they don't have trade mark laws like we do here.i changed my extra 300 to a moli 1.80 glow and got more power and less wheight and a tried and true power house rcs is the american trade name for the bad gassers from germany