I am 14 years old and have been flying for about 6 years. I am just starting to get into 3D flying and I built a 40 size Extra by Great Planes. I have finished it and flown my dad test flew it for the first time on Sunday. I put a 46 LA on it but it doesn't seem to have the power to do the 3D manouvers. I was wondering what you guys were putting on it for power. If you could give me your input that would be great. Thanks Greg.