Build length of the Cubby frame and deck

The Cubby plans call for chopping off the front edge of the deck at a 14 degree angle to account for the curve at the front of the body.
In order for the "short" edge to measure 93 7/8" after making the cut, don't I have to build the deck frame length slightly longer than the trailer frame?
In order for the "short" edge to measure 93 7/8" after making the cut, don't I have to build the deck frame length slightly longer than the trailer frame?