Skip, seeing how the Ares was just redone, I wasn't quite certain as to how much fuel you were using. Just from the sidelines, it seemed short. Does the plane have a 3.5 oz. tank? Even the MAX-S would be hard pressed to complete a pattern with 3.5 ounces at least in our parts of the woods. I'm quite certain that choking the venturi down would help, I would just use caution about overheating it. I believe at one time Master Airscrew offered a 10 x 3,5 3 blade prop. Unfortunately, I don't think that one is available any longer.