My 98 XR250 has never had the valves adjusted. Slight noise but not bad. I adjusted to the wrong numbers (.005 int. and .008 exhaust) instead of .05mm and .08mm. Very noisy! I reset to .002 int. and .003 ex. as per my Clymer's manual. It's still worse than before. I disconnected the manual compression release to make sure it wasn't a problem. Did I damage something or am I just screwing up again?