That's what I love about the Z-series Futaba radios. The first step in setting up a model is telling the radio how many elev. channels, how many ail. channels, etc. Once you do, the radio assigns everything to it's own channel. Then you go to the function menu to see what the channel numbers are and plug the servos in accordingly. The radio does all the mixing for you. The DX6 and DX9 that I played with worked the same way. Enough to make a guy lazy.