I don't know what the difficulty may be. I set up my 9C transmitter just as you mentioned, and all the mixes worked properly.

I used prog. mixes #1, 2, 3, 6, & 7, just as you did. They all work. What is not working when you turn on the mixes? Are any still on "INH"? Did you forget to turn link and trim on where appropriate? For the throttle->aileron and throttle->elevator mixes, did you set percentages on the graph?