By Doug MacCash, NOLA.com | The Times-Picayune Chris Granger / The Times-PicayuneA miniature float from the 2011 parade by the Carnival krewe formerly known as 'tit Rex. The pronunciation is questionable and the typography is a headache, but the board of directors of the tiny Mardi Gras marching club formerly known as ’tit Rex has added an unusual symbol to the krewe’s name in hopes of avoiding a legal showdown with the venerable Rex parading organization. The new krewe title is exactly