I'm guessing you've got the big one....but if it's anything like the 40 size, and you use the stock hardware...then yes, you have to pretty much redo the entire setup to change the throw....ie. lower on the horn at the elevator or further out on the horn at the servo. Since I went ahead with the stock stuff I just set it up for Big 3D throws and then tuned it down thru the TX for normal flight modes.