Known across the land as one of the deans of New Orleans guitar players (pictured), the seven-string virtuoso will be stepping down in tone and number of strings this evening as he joins Johnny Vidacovich and June Yamagishi at the Maple Leaf in the latest scintillating version of the Trio.  George Porter, Jr., the regular bassist, is on the road with his revamped version of the Runnin’ Pardners.