da rock , that was with a deflector on it,lol. I was running rich , because it was it`s first flights.
I do believe an OS is one of the easiest engines to tune. But ST , GMS , and Magnums , 2 strokes , are good products and I don`t hesitate a bit to use them.
I`ve put about a 1/2 gallon of thru the OS .46 ax and it has preformed flawlessly , hope the power gets better after a few more flights.