Okay, rebuilt the top-end last summer because of excessive valve noise. Replaced piston, rings, valves, guides, cam chain, and had the cylinder replated by millenium technologies. The bike made this ticking going into it, partly caused by piston slap. And when I finished, there was still some ticking, just not as loud anymore. Except lately, the ticking has become more intermittant, and its producing different tones in the ticks. Everything is in spec. Valves are adjusted, and manual decomp is adjusted. My question is, has anyone had any issued w/ the manual or auto decomp on these bikes? I'm really leaning towards it, because if I pull the manual decomp lever in ever so slightly while the bike is idling, then the tones of the ticks are varyed w/ how much the lever will move at each pulse. Obviously kind of hard to explain this. Mostly, anyone know of any decomp issues on these bikes? The shop manual is no help; it says nothing more than how to adjust the manual decomp.