I have a 10C radio with a R617FS RX, I am interested in using a retract Servo (Spectrum A7000 Retract Servo) that can be slowed down and want to assign it to the Throttle Channel so I can use the Throttle Delay or Slow Servo function; I have read the instructions on the Futaba Web site how to do this, the instructions indicate that you assign Throttle Function to another Channel namely Aux Channel #8; however, the R617FS RX does not have 8 Channels only 7 and I am using all 7 with the Battery plugged into 7, can I just swap the Throttle(#3) and Gear channel (#5) around to accomplish this, substitute Channel #5 for #8 in the Instructions given?

Thanks, Doug.