Thanks for the input guy's. I too have also had nothing but good luck with OS engines, had a bad experience with a Tower .46, not saying they are all bad, but the one I had gave me nothing but fits. Even after having almost a gallon of fuel through it. Call me stubborn, but I was determined to get it to run right. But it finally won, and I gave up on it. I could get it to idle good, had good transition, and good top end. But get it ten feet off the runway and it would start running like a piece of crap. But back to the subject, will stay with a 2 stroke and it will be an OS. Thanks again.