Tom, I found the link you provide to be one of the best explanations for mixing. But for whatever reason, I get to step 8, check the [DISPLAY] to make sure I can see changes and I don't see anything change on any of the channels when I move the 3 position switch. It's almost like my F. Mode three position switch isn't connected to anything. No matter what I change under PROG MIX or AUX CH, I can't get that switch to show anything under DISPLAY. Are you aware of anything else in the settings that I would need to change to make the 3 position switch show something? I am regretting getting something with so horrendous documentation.
I can't recall seeing anything that enabled or disabled the F Mode switch, so maybe yours is actually just faulty...
The documentation is pretty non-existent and the menus suck, but it was hardly wasted money for me. A gamble for sure, but so much cheaper than the other transmitters that it was worth a try.
IMO the Turnigy outshines all others by the Open Source nature of the firmware. There are destructions and guides, as well as no-soldering-installation kits availible to add a usb interface and upload new code.. if your comfortable with building a ardu-anything, you can handle adding new firmware to your Turnigy!. New code brings out easily programmable APMega switches and dials.