I want to use switch 'C' on my 9C for 3 position flaps (up, 1/2 flaps and full flaps) and mix in elevator too, but don't know how to do it. Each flap has its own servo connected to a 'Y' which is then plugged into ch 6.

Based on another post here I can get the desired flap movements (without elevator mixed in) using 2 Program mixes: the first Pmix is Offset as Master, channel 6 as slave, center position on switch C = rate needed for 1/2 flaps, and the 2nd Pmix again with Offset as Master, channel 6 as slave, switch C down = rate needed for full flaps.

Do I have to use 2 more program mixes to mix in the elevator (one mixing into 1/2 flaps and the other into full flaps?), a total of 4 mixes (!) being used just for elevator-adjusted flaps? or is there a simpler way?

Thanks.