Denis Watkins . what do you mean the two outer switches ? manual says all 11 switches are programmable. when you call up AUX chan , it shows 5 to 10 and you can scroll through from A,B,C,D,E,F,G,H,VR,DT5,DT6,AND NULL. i have tried every switch on all 5 aux channels. 5 to 8 work on all 11. 9 and 10 not at all. And i bought two rx and neither work on 9+10.