A highly divided Miami-Dade County Commission Tuesday approved a new and smaller board to run Jackson Health System after intense debate. The issue was finding a resolution to replace the temporary seven-member Financial Recovery Board appointed last year to watch over a system suffering from massive losses. In recent weeks, Commission Chairman, Joe Martinez, kept modifying his concept for a permanent board to appease critics. His first plan was to have a board that was totally self-perpetuating, to keep Jackson out of political control. In later versions, he added politicians to the nominating committee.