Like Josh said, and try wiggling it (rotating in the hole back and forth as you pull out) not too far, just enough to help you feed some penetrating oil in and pull. WD is good stuff, try something designed specifically for penetrating too. When you do get it out make sure you use some anti-seize when you install . . . just in case. I got mine out in one piece but it took about 45 minutes convincing it - real PIA. #@$%! Good luck