I'm unable to move the elevator trim from "full nose down." Any cluesas to how I might change that?ChileGuy

Never overlook the obvious. I've had a similar thing happen a few times until I realized I had the autopilot engaged. Hope it's something as simple as that. Robert

Sometimes it will correct itself if you restart the computer.

Thanks for the hints. The solution is somewhat weird. The keyboardcommands still don't work, but when I programmed the CHPro trim buttons, they work perfectly! :-hmmm ChileGuy