I had two of these years ago. Both of them caught me off guard and snapped into the ground. The first one I built per instructions, the second I used pull pull rudder. Never had a problem with the landing gear and never had a problem when flying aerobatics, can you say knife edge forever. Leonardo, heed the warnings of using excessive control throws. Both of mine snapped into the ground when making a tight turn with excessive throws and low air speed. Good luck.