“Morehead,” the second nonfiction novel and latest release from Inverness author Jeffrey Hickey, hit the shelves Tuesday. An explicitly adult novel, the story unveils the life of Dave Morehead, a young man living in San Francisco in the late 1970’s and 1980’s, during the height of the sexual revolution. While West Marin is relatively open-minded, Mr. Hickey’s new novel has proven that even its literati can be perturbed. “I actually read a chapter at Blackbird,”…