I had my 4 servo wing glider set up as I wanted, so I know it can work the way I want it! For one reason or another I had to reprogramme the beast. I'm using glider Glid(2flp) set up, as before.

My ailerons follow flap movement & vice versa when I move aileron/speed OFS/start OFS/Butterfly, so that's all ok. My problem is snap flap. I am using Elev to Flap mix for this, actuated by switch F. The problem I have is flap goes down with up elevator, as it should but the ailerons don't move. As I said above for all other functions, they are linked to flap. I have flap to aileron activated, also actuated by switch F.

I have a 3 servo wing glider set up the same way and the two ailerons follow single flap/elevator, just the way they should.

How do I get aileron to follow flap when using snap flap?

I finally got this figured! I had +ve movement set in the flap to aileron mix and as it was only set to move one way it didn't move at all. On chaging to -ve movement the ailerons now go down with flap in snap. Wood for trees I guess!