I've owned 2 of these great planes. The first one, like the previous post, was the ARC version. I don't have the weight on it but assume it was close to the second one, the ARF version. I built both to specs, the 1st one with dual airlon servos, the second with a single servo using the torque rods included with the kit.

1) I liked the ARC version the best because it gave me the option to dual-servo the wing without having to modify it. I flew it with a Magnum XL 1.20 2-stroke. When that engine was running decent (rare) it ran like a bat-out-of-hell and was my excellent 2nd airplane after the trainer. However, my improving flight prowess overtook my brain and I ended up Spit-SSSing it into a tree at full throttle. We found the undamaged engine over 75' away from the tree base -- half of the wing, with servo, remained in the tree.

2) The second version was the ARF -- I assembled it according to instructions. I also started using the Magnum XL 1.20 (weight was 9.5lbs with this configuration). I switched out the Magnum for an OS FXR 1.08 (BX-1) and fell in love with that engine immediately. Airlon response was farely robust but the 3" dihedral really put a damper on the roll and loop tendencies. It actually became a chore to do a simple precision airlon roll and a simple loop required a lot of rudder assistance. Unfortunately my flying prowess (lack of) again failed me -- this time my 50-year old eyes saw a tree 40' behind its actuall location. Alas the plane disintegrated into the side of the tree -- thankfully my prized engine was undamaged.

Recommendations: Dual-servo the wing and remove the dihedral by sanding down the roots of both wing halves. You'll have to carve a channel for the servo wires in the foam wing but you can easily cover that with film or balsa. Go with the upper end of the power requirements. This plane, regardless of what Model Tech says, will not fly with a measly 60. It needs at least a 90 and gives much pleasure with a l.08. If you want performance comparable with an Ultra Stick I would increase the width of both the airlons and elevator. If you want to knife edge think about replacing the horizontal stabilizer and rudder with a design similar to the Ultra Stick.

Possibilities are unlimited with this airplane.