Thats different from the off set motor. There isn't a positive stop in any of them. I can loosen 3 small screws and change the switch position by rotating the plate that switch is mounted on. For yours, I can only suggest Feck the spec. Lessen the switch gap so the motor runs a split second longer. We dont know exactly how much run on after the switch opened there was when everything was new. Binding in your wiper pivots may be preventing that original split second run on.