I couldn't find any leaks around the headers, that was my first guess, I even took it to an exhaust shop to see if they could find anything and nothing.

Engine feels ok still

How do I know if a rocker has backed off or not?

And I also just ran it with the covers and also recorded some videos for sound and maybe someone can notice something I don't

This one is the sound with the covers on

http://vids.myspace.com/index.cfm?fu...deoID=22743285

And this one is with the cover off

http://vids.myspace.com/index.cfm?fu...deoID=22743369