A great deal of development has been done on RS frame.  The chassis has been rounded on the bottom, and the tank raised for the better airflow. The engine plate is now Vittorazi specific to be lighter, and has access to the starter for easier maintenance. The arms are multi adjustable for all pilots, and take away all the engine torque for straight and level flight at full power on speed bar. The cage is shallower for increased strength, as well as bigger carbon fiber spars, and only six of them.