STURGIS, Mich. - The state is offering tax breaks to bring in more than 4,000 jobs to the state ? 800 of which will be for the west side. In Rothbury, Carlton Creek Ironworks is expanding, creating an expected 187 jobs. The company plans to expand its capacity to create iron elements for windmill castings. In Wyoming, Control Tech Manufacturing plans to move into a building on Herman SW. The building is…