There does not seem to be a way to fix this without moving the scupper holes up an inch or two.
Brad Knight of Onslow Bay told me today that all of their boats are set up with a deck deflection of 2 degrees stern to bow. Would imagine this would equate to 1/8ths of an inch fall bow to stern for every ten feet of deck.
And yep....what's a 1/4 inch amongst friends