I had a 93 CBR 600f2 a long time ago. When i sold it, it had around 24,000 miles. I never did a valve adjustment on it. What is the longest you can go, milage, before these bikes require one? In other words, will it just stop running one day because the vavles need adjusting or what? Curious, because my R1 just turned over 11000 miles today.:hellobye