I have an '87 XL600R. Makes a funny top end tinging sound that follows rpm. Adjusted the valves last night or at least hope I did properly. .002 intake and .004 exhaust. Now seems to be louder for noise. Does not affect power or starting up but now the kick start jams up on me more often. Sound seems to come from left side but also right side. Any ideas on what to check for? Maybe adjusted wrong and now too much play in rockers? Slack adjuster jammed? timing chain stretch? Or normal to have the noise and I just made it worst with improper valve adjustment? I am lost and now worried to ride it. Any insight will be greatly appreciated. Oh yes, it is a new bike to me. Purchased it last week after being away from riding for almost 20 years.