‘15 Big Ones,’ ’68 Camaros, intimidating drummer Dennis Wilson, soft-spoken bandleader Carl Wilson, and more backstage exploits with the ‘Return of the Killer Shrews’ screenwriter-burgeoning vintage film restorer behind Roy Rogers’ final western ‘Mackintosh and T.J.’ — The Steve Latshaw Interview I wanna hear how your fascination for “America’s Band” originated. I was 16 years old in 1975, part of that mid-’70s second generation of fans, when I became captivated by the Beach Boys sound on the radio. But it wasn’t a Beach Boys song. It was “Beach Baby” [No. 4…