Complex sentence: The design was noted for having light and effective control surfaces which allowed for good manoeuvrability, but that the rudder should not be used aggressively at high speeds; poor aileron control at low speeds when landing and taking off was also a problem for inexperienced crews.
Split into simpler sentences: The design was noted for light and effective control surfaces that provided good manoeuvrability but required that the rudder not be used aggressively at high speeds. Poor aileron control at low speeds when landing and taking off was also a problem for inexperienced crews.