Even though they had had their fair share of fights and scuffles, a little wrapped box signed “DO NOT OPEN UNTIL 1ST DISAGREEMENT” remained unopened in the Gunn family’s closet. style=”display:inline-block;width:300px;height:250px” data-ad-client=”ca-pub-8420654331411867″ data-ad-slot=”1313712966″> The box had been a wedding gift to Kathy and Brandon Gunn from their Great Aunt Allison. Aunt Allison and her husband had…