Mode 3 possible?

Left handed for 76 years, so I doubt I can alter those entrenched reflexes. Tried PX4 and Arduplane on Qgroundcontrol and Mission Planner, and Arduplane on Mission planner looks OK but in the end the channel assignments are scrambled.
What to do?

Posting in 10 different places isn’t going to get you any better answers

Did not intend to upset you, Don. Each of the three posts is slightly different, in a different subject area, (tried each of the software/ground stations before I posted) and the subject is germane to all of them. Not a random shotgun blast.
Again, my apologies if you are offended.