Recently, I noticed a clicking noise coming from my bike. My first thought, was that it was my valves, which were due for a adjustment. I had my valves adjusted and mentioned the clicking. The shop told me the clicking could be vlaves or maybe my cam tensioner. Well, I got my bike and the clicking is still there. Its really loud when my bike is cold and as my bike warms up it gets faster and quieter. For some reason, I've been thinking this could be an exhaust leak. As I mentioned in a previous thread, my exhaust header is really dark with rust in some spots. Anyone have an idea about what this could be?