I had a similar problem. I am using a 12Z. When I programed the radio I get a (Radio Set Up Incorrect) error message. I tried and tried and could not get it to take the radio set up. I finely went to another plane that I have another KingTech 140 in and looked at the endpoints that I had in that set up, I had to change them to get the travel percent correct. I also looked at the pulse it was 981 at 0 and 1866 at full throttle. I had 80 and 100, 0 sub trim. I set the radio up the same and it took it. Now it works fine. Don’t know why but it worked.