Hi All, Had my bike in at my lbs today to have a few things checked and while there he had mentioned that i need to replace my chain. This is all fine with me but i have only logged at the most 400-500 miles on it. My question to all of you is, is this something i am going to have to do every 500 miles? Is this considered normal wear and tear or am i doing something wrong while i am biking. He had mentioned that possibly i was cross chaining. If that is so would the chain wear that quickly and how do i prevent further problems likethis. Any and all help (suggestions) would be great. Thanks in advance for the help. Brad