Complex sentence: In 1982, just four years after beginning to work as part of the Winter Hill Gang, Weeks left his legitimate job and became a full-time mobster in the gang, during which time he attempted to extort future UFC President Dana White.
Split into simpler sentences: In 1982, just four years after beginning to work as part of the Winter Hill Gang, Weeks left his legitimate job and became a full-time mobster in the gang. During which time he attempted to extort future UFC President Dana White.