Sure, Mine does that too...Could it be the oil pump?...I just snap the throttle, and it goes away.
Mine ticks slightly also, intermittently, when cold... sometimes when warm, just as you say. But not a knock, and no power problems.Mine ticks slightly until I touch the throttle and then it immediately goes away. When on the throttle it sometimes sounds like a diesel. Which is normal. If you hear a distinct knocking or ticking sound for extended periods of time I suggest you get the valves adjusted, if that doesn't solve the problem then the cam chain tensioner is shot, it and the cam chain will need to be replaced.
Little late, but i found this article very informative...Honda Rincon Knock and Rattle Fix - WATVA Blogs