I crashed it once due to aileron flutter {tore em both off} straight and level at half throttle. I would recommend taping the ailerons with clear tape & using 4-40 rod with ball links. I had solid threded rod with plastic clevis's {not good}I also had the clevis in the bottom hole on the control horn. Other than that & it is an awesome flying plane!!!! I have been in this hobby for 25 years & it is one of my top 5 planes ever. I have a Saito 80 on mine & it flies GREAT!! I also balance it a bit tail heavy. It flies like a trainer with minimum control throw or INSANE with 3D throws.