Complex sentence: When Gravano took over he became unhappy with what he considered sloppy management and muscled his way into the business by breaking Michael Pallante's fingers and strong arming him and took over the entire operation but kept the original arrangement with Salty and Vinnie Sicilian.
Split into simpler sentences: When Gravano took over he became unhappy with what he considered sloppy management and muscled his way into the business by breaking Michael Pallante's fingers and strong arming him. He took over the entire operation but kept the original arrangement with Salty and Vinnie Sicilian.