Representing a private equity firm with more than a billion dollars in capital and founded by a Harvard-educated lawyer could have been daunting for a young attorney.But Kevin L. Morris was so adept at deal-making for clients like Monomoy Capital that its founding partner, Stephen Presser, would joke that he didn’t really need anyone else.“Stephen would say to me, ‘Richard, I’ve got this. I’ve got Kevin. I don’t need you,’” recalled Richard W. Porter, a partner at Kirkland …