Camchain tensioner again?

After I had a rattling a couple of months ago, I reset the front CCT and the rattle disappeared. Now it's back with a vengeance. Not only do I get the rattle when the engine is running, but when I corner, I also notice a new sound. Not a rattle, but more of a woosh, like air passing through a tunnel at high speed. Very odd I know, but what the hell could it be? Only happens when the bike is not upright.