AMA Supersport Racer
Join Date: Dec 2011
Location: Lexington, Kentucky
Thanked 102 Times in 84 Posts
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Video would help tremendously. But you've already touched on both the most likely culprits. CCT isn't that expensive and is very easy to swap out with a new OEM unit. I would try that before pulling the valve cover off before doing a valve clearance check, unless you can absolutely rule out the CCT.
'03 600 RR - ~33,000 miles (14,000 from me)
Yoshimura RS-5 Slip on - Arrow Stainless Headers - BMC Street Filter - PCV - EK 520 Chain on Driven Sprockets - CoreMoto Stainless Lines (F+R) - Dan Kyle PAIR Delete - The2Wheels Shorty Levers - Vortex V3 Rearsets - Woodcraft Frame Sliders & Bar Ends - Woodcraft Stator and Clutch Covers - Cox Radiator Guard - Renthal Dual Compound Grips - 1000RR Kill Switch and Throttle Housing - TST IT and FE - Proton Flushmounts