yes, you are right.
Or you can switch the servos and fly with only the right stick (which is the same as flying with ailerons except you are using a rudder instead)
Your best bet is to get a RTF deal that comes with a sim cable for your computer and practice flying with ailerons.
It actually is easier to fly with ailerons than with rudder.
Turn right= give a little right aileron and a little up elevator. left turn=left aileron and up elevator. (up elevator maintains altitude while turning and tightens up your turn)