I asked them to change the CO levels to help with the known hard start issues these bikes have. The salesman called the other day and said his head tech didn't want to set it until I uncorked the bike because adding exhaust and removing the air box snorkel will change the CO levels. This didn't make sense to me but I didn't want to argue on the phone about something I don't know much about. Any input? 2014 WRR-Totalled 2012 WR450F-Stolen 2013 WR450F-Third bikes the charm.