Hi again,

I am using a very light prop and spinner, it must contribute to have that kind of unstable idle !
BTW: I need to reduce the noise of the engine, could anyone tell me if it is worth to buy the pitts style muffler. I have the bme stock muffler, but some people are complaining... If I order the pitts style, should it work better?, or at least, would it sounds any nicer?