How many miles are you all getting from your chain and sprockets with conservative riding. I am a little heavy handed at times, but most of my miles are commuter (a damn shame if I must admit for such a capable bike). Anyway, a 2003 Tuono, stock gears and I am assuming stock sprockets. Bought with 4300 miles and currently closing in on 13K. Go through bikes so often that I never get a chance to buy a new chain and last two bikes were belt driven! Thanks!