MORRISTOWN: Jim Miller built his MMA career — his reputation, really — on durability and reliability on his way to a record UFC fight total and to becoming the promotion’s career wins leader. Hefty marks — even without winning a championship — for the New Jersey native trusted enough to get plugged into most of UFC’s milestone cards in its rise into a billion-dollar global sports behemoth. “I’m not just out there just to win,” Miller said of his fight style. “I’m out there to win to make me happy; to make me excited with the way that happens.” Miller’s joy was dimmed over the last year when his teenage son was diagnosed with a rare form of childhood cancer.