Peter Mayhew “Chewbacca” is having both knees replaced in hopes of rising to his full height of 7’3″ New York, New York, August 29, 2013 – Peter Mayhew, the man who brought to life one of Hollywoods favorite sidekicks, ‘Chewbacca’, is having a unique procedure done to restore his ability to walk. He would like…