couple questions regarding my 08... its time to replace valves (or maybe even seats) as i belive they have reached their operating limits in terms of clearnces. I was able to adjust all my intakes to proper tolerance with the exception of the furthest right side one. Im guessing it gets most of the mixture since the carb is slightly angled in its direction. I was only able to get it to juuuuust above .10mm ( i prefer closer to the looser end of the range). I deduced this because if i continue to go in order of shim sizes and begin to reduce the shim thickness and check clearances, it stops at about .065mm clearance. Right now its got a 140 shim in there with a .10 clearance. If i put a 135, clearance goes to .065, if i put a 130, its still .065. So what is happening is the cap is contacting the spring retainer and not the stem of the valve. So whats next? pull the head and replace valves (im guessing for sure i should do this)? What about seats and guides? Springs? Replace with stainless? I guess I should also do timing chain, cyl, and piston while im in there. the bike has 179 hours on it. all original!!! I like to maintain my stuff.... ps- exhaust valves havent moved in a loooong time. Should thay also be replaced? I guess might as well... ok, thats all the questions I could think of so far.