Regarding the Cessna: You may actually do better using the ailerons and leaving the rudder alone.

Regarding Hobbytron: You may actually do better using another store and leaving Hobbytron alone.

(Yes, I know the question is from March, but the advice is still valid. Particularly regarding Hobbytron, when people are thinking about last minute Christmas purchases. Don't order from them until you've done some independent research on customer satisfaction.)