RE: Futaba 12Z programming question.
remove and control assignments from the nose steering channel in the functions menu ...
then set a mix from rudder to the steering channel, and set the mix act/off control same as the switch you use to pull gear up / down ... , use mix % settings to adjust the travel of the nose wheel .. you can also use an exponential curve on the mix (that would compound on top of any expo you may already have on the rudder .. )
there is not much toy can't do with this radio [8D]
~V~