I was wondering when other people were getting their valves adjusted and how far off they were? I know the book says 24400mi and that seems like a long time to not touch them, but I have a friend with a 04 fz1 that has 50000mi on it and the valves have never needed to be adjusted. My R1 has 13400mi on it and I've noticed the valvetrain starting to get louder over the last couple thousand miles. I thought it was in my head till my buddy bought a 08 R1 with 2500mi and it seems much quieter. Also How much have you guys paid at the shop to have a valve adjustment? Any info would be appreciated. Thanks.