Rarely does this model show up in the forums, so I am always interested when it does. I used what the manual says for CG location, and the plane flies terrific there. Mine came it at 9 pounds with an OS91Surpass II w/pump. Flies exceptionally well. I replaced the stock retracts (too thin) with some cheap ones from AK-Models, and they have stood up fine for the last year of flying...but I only fly it about one day each month, 3 flights each time. Flies and lands like a sport plane. Hope you enjoy yours as much. Jon