VEHICLE ROLLS FORWARD WHILE IN PARK. SHIFT SELECTOR IS IN PARK AND THE VEHICLE ROLLS. MARKED CRASH DUE TO ONE INSTANCE WHERE IT ROLLED IN TO THE HOUSE DECK. NO DAMAGE TO EITHER VEHICLE OR DECK OTHER THAN MINOR SCRATCHES. THIS HAS HAPPED SEVERAL TIMES AND I HAVE A VIDEO OF THE VEHICLE ROLLING WHILE SHIFT SELECTOR IS IN PARK.