OK... got it flying on the MEGA 16/15/3! Awsome.. much more power. Think I will order an APC 6x4 to try. It really has a lot more power. Still need to install the extra spars, but was itching to see how it would fly (and weather is moving in). Will install the spars while it snows. What do I need to worry about as I try different props etc.. Hot battery? Short Flight times etc??