G'day TT members, well I finally did it took the plunge and opened up the top end to inspect the valve clearances. The last few rides I have noticed a noise coming from the top end and thought Oh, Oh..tight valves. After downloading Dougies instructions the top end was opened and I discovered that both the inlet and outlet valves were tight and out of specification with what is recommended in the manual. Inlet clearance 0.10mm. Outlet 0.20mm. Taking a deep breath and tightening my sphincter muscle I lifted the cam covers, inspected the valve shim numbers and proceeded to put everything back in place. Beware the halfmoon clip, it nearly fell into the motor! What I am unsure of is the position of the decompression shaft. At the moment with everything reassembled there is 5mm play at the decomp lever and the decomp shaft is pushed all the way into the motor. Q. Should the flat side of the decomp shaft be facing the exhaust valve? Should it be pushed all the way into the motor? Q. When reinstalling the cam chain tensioner, is it simple enough to let the tensioner "spring back" and unwind onto the chain? Does that make sense to anyone? What is your method for resetting the chain tension? I accidently stripped some of thread from the 12mm adjustment bolt. By using loctite on the remaining thread will that be enough? It does not seem like a critical fastener. I plan to order the replacement valve shims this week and hopefully will have them in the bike by next weekend. Any further advice/encouraging comments from the likes of Taffy "cam master", James Dean "jet king", Clark "guru" Mason would be greatly appreciated. Cheers Simon "mechanically inept" Grummett PS. By wrapping the frame in a plastic bag prevents mud and dust from falling into the motor.