When I was working on my bike today getting it ready to ride I remembered before I stored it that I was putting framesliders on, long story short. When I was unscrewing the enginebolt on the left side it came about a quarter of the way out andsnapped but it did not feel like it was cross threaded when I was unscrewing it. Is this a common problem that people have, and how do I get the broken bolt out? I was thinking about drilling it out but I would hate to goof something else up and be S.O.L.. Should I take it to a dealer and have them do it?