Over the weekend I pulled the case off to rebuild the water pump. When I pulled the power valve cover off I noticed that it wasn't attached to anything - see photo. To me, the bike has always run great - I would have never thought the power valve wasn't connected. I bought the bike used a couple of years ago and it is set up for the woods. Is there a reason that the power valve might have been disconnected? When I pulled the cover off, nothing fell out (like a screw, nut or whatever) so it makes me think it was intentionally unhooked. Any thoughts? Other than how damn dirty my engine is.