Anyone have any ideas as to how many KMs you can expect to achieve before you may need valve work on an 06VFR? My mechanic is wanting to look at the valves next service. I have 46,ooo km on it right now. Says he doesn't like how it idles, I am mechanically inclined but not with bikes. I don't even do my own oil changes. I do lube the chain regularly though so I am not totally blonde