OK...seeing how you are not giving up, I can't quite leave it at that either.
But since it did not work despite doing exactly what you described and because I got two errors when the update to the latest release ran, even though they were only related to documentation, I decided to uninstall FSUIPC and then do a reinstall to the default location, which before I had not used.
And the first thing I saw in the FSUIPC window, before even entering the AXIS assignemtns was a line showing 902 LVars, 134 Hvars and 10980 presets loaded.
That was not showing there before.
So I copied your modified myevents entry into mine and then restarted MSFS and FSUIPC one more time, just to be sure it was a clean start.
Then I set up the throttles, brakes and elevator as before using the "direct to FSUIPC" and the aileron and rudder using the preset.
And this time it did work. I can only assume that something in my installation was not allowing some of that information to pass back and forth.
Being a curious one I then tried to repeat the tests you had asked before, to update the LVars manually....and that now did work. And the list also was populated with the 902 LVars ... I guess that should have been my clue, when before I only had an empty list.
But now when I do the "2. The calculator code/assignment is not correct. To check this, activate logging for Axes Controls, and WAPI -> Debug logging. Open the logging console (Log -> Open console) and move your assigned axis, and see if you can see the correct preset/calculator code being sent." the console does not show anything for aileron or rudder....but they work in the aircraft.
Elevator or brake axis is shown in the console window.
But I am perfectly happy not understanding that part for now and will just go fly a lap or two.
Thanks for your gracious help John. I am sorry if I was the kind of dense customer I hate in my own job.
Cheers
Sunny