Dave, The trim wheel does not respond to the mouse pointer. If I turn the Num Lock on, the 1 and 7 keys affect the pilots view not the trim. The only time that I get trim response is when I do a Ctrl-T and then the trim responds while the down trim button is pressed. Once I release down trim (the 7 button) the trim auto adjusts back to 19.5 degrees up trim. I'm tempted to call MS Support but I know they will ask for a credit card.
John