Thanks for the help, blitzk!
Found my problem, I was trying to run the sound from the throttle stick without going thru the start up procedure on the
other control stick. NOwhere is this explained anywhere.
Here's what I mean;
https://www.youtube.com/watch?v=E-3ADvABQks
Good to know on blitz's link there are 4 other functions that can be accessed for setup.
Thanks!