Thanks Ex- thats pretty much what I figured too. Its just a big wing for a .72 4-stroke, and my main concern is that it wouldn't be too marginal on power. I will eventually upgrade the engine. Will be nice to hear from Test on how his flies. The Magnum .91 sounds like a great match for this plane. Saito 100...wow. I've even read about people putting 120s in it...YIKES!