Could someone PLEASE post how to shut off this damned lap timer? I've gone through the manual a dozen times and have played with the menus and sub menus, and sub-sub menus until my fingers were numb and I still can't figure out how to shut this thing off. I'll start off in the "road" display with engine temp, time, trip 1 mileage, and then, seemingly on it's own a lap # will appear and blink constantly in the upper left-annoying and distracting. Thanks