Anti-jam press the buttin for 1/4 second, you usually don't need to do this because the Blitz has auto anti-jam.
Force 1 no force equivelent(sp) to the select force on force 1 but faster.
Force 2 puts pressure on the balls for a limited time.
Force 3 the same as force two but faster
Force 4 constant pressure like the select force on 2-8.
To switch modes hold the button for 1/2 or longer and it switches to the higher mode then flashes in red the mode number.