I Have a great planes 40 stick with a 46 fx fly's great! Balanced mine right on the main spar.Four cell pack right behind the servo tray. Low rates by the book. High rates as much as I could get with out binding. On her maiden I did a roll on takeoff that's how well it fly's just felt right! The reason I got this plane was to fly out of small fields. I can fly it were I wouldn't dare fly my big stuff. Lol