Hmmm...have to pull the old 9C out and check this but.... Setting end points on positions A and B are possible, IE: switch up, switch down..... on the 9C you cant set the endpoint for switch center unless I am missing something? That is why I was assuming your settings "+100% /0%/ -100%" meant takeoff flap/no flap/landing flap....? What you are describing is possible on my 9Z but I dont think you have this ability on the 9C without using a mix?
Todd