Harman MK III Fire brick

Have the new MK III all hooked up and ready to go except I can't, for the life of me figure out the fire brick pattern, If I install it the way the book shows I end up with 3 pieces left over.

Any Pics or idea's?

BK

Bricks stand upright across sides and back. Lay sideways across front under door. You may have to break one in half. Sounds like you have 3 extra bricks?

As stated, sides and back stand tall, there are two small thin ones that go in the front corners on the side and the front two are sideways with a short skinny one in the middle as a spacer.

Got it, thanks.

BK