That is true. Being that you said that, I put on just over 3500 miles last year on my race gas cat with no problems. Pulled it apart this year for a maintenance rebuild. Found out everything was tight and didn't need it but did it anyways. Only thing that really needed replacing was the reeds...
He is right though....you should b paying attention to what's going on behind you as well. Like riding with your group. Do you never look to see if your buddies r ok behind you???