If you are looking for 2 strokes, OS makes the best. My 46 FX fired right up with a chicken stick after not being run for 6 months. The only adjustment that was needed, was a little tweaking on the high end since there was about a 35-40 degree temp difference from the last time I ran it. It ran on the first flip, but it was running backwards. On the 3rd flip, it ran forwards...