See if this TRIGGER MODIFIER code works for your sidewinder. It has a little built-in aileron/rudder coordination and on the ground aileron gives differential wheel left/right braking. Slider axis No 2 gives Throttle but if TRIGGER is pressed you will find it moves rudder. (best observe how rudder moves by using keyboard "v" to get helicoptor view.
Four buttons are used to pan view horizontally and vertically but when trigger is pressed they serve to trim ailerons and elevator. If the view or trim moves the wrong way for you, just switch the negative signs between each button pair.
http://db.tt/srCisgEdPS Tested above link code in this video (buttons were in very odd places! Didn't suit my joystick configuration)