Ok my 9303 is of the new 2.4 ghz type and has the button for the trainer. My old 9303 72 band had a toggle where the button is on my new radio and it was heli version. ( I fly heli's also ) . Sal, is the switch you speak of a 3 position switch with flight mode 0,1,2 labeled? and is your throttle stick missing the notchey feeling when you move it up and down, ie smooth? not really a big deal as all of the switches are assignable . I have no problem flying my heli's on an air radio so if you happen to have a heli radio I don't think it matters. If the throttle is smooth you may want to pick up a tensioner with a detent on it to maintain a more fixed throttle position, so rudder inputs don't cause your throttle to change alot while flying