Ok, I hate to bring an old thread back to life, but none of the engine noise/whine threads ever get finished... My bike is making the same noise (not cam chain guides, already tore engine down and checked them,) and I was wondering if you ever figured it out or just burned/sold the bike out of frustration. I am trying to gather as much info as I can without posting a new thread since everyone gets upset and tells you to search before posting. Update?