[RCSE] Need help programming JR 770 rcvr

[Bernie]

I need help.  I am trying to set up a 4 channel glider. Rud, elev, and two separate spoiler servos.  It is a V tail and I have that working OK. But I dont know which channel to plug into in this rcvr.  I use a JR 8103 Xmtr.  The channels on the rcvr are Trottle Aile Rud gear Aug 1 Aug 2 I'm using the butterfly mix for spoi-elev to give me slight up elev when I activate the spoilers.  I have one servo in each wing and don't want to use a y harness if possible. Any help would be much appreciated. Bernie