On my DeWalt saw, there are no stops on the blade clamps so you can mount the blade anywhere on the clamp. When using FD UR blades or any brand skip tooth blades I have about 3/8" from top to bottom. I usually mount the blade protruding from the top clamp. As the blade wears, I will lower the blade so it just barely clamping in the top clamp and protruding out of the bottom clamp. It's like doubling the life of the blade.
This won't work for standard reverse tooth blades because when you mount the blade in the lower position, you lose the reverse teeth.