You're sure it is the Aero Ace? I haven't been able to find them at any Walmarts. When trying to gain altitude, don't give it full throttle. Try to give it 1/4 to 1/2 throttle. This will keep it from nosing up and stalling. I usually circle mine at 1/4 throttle, and climb 15 to 30 feet in the air without any problem.