My bike has 26000km on the clock now and is parked for the winter. I was awfully hard on the motor this year. Come to think of it the last 10000km I've put on it weren't very nice either. During the last month of the season I started getting a strange rattley noise from the engine. It was definitelty an engine noise. It was fairly quiet and seemed to be intermittant. I never noticed it before but I did switch back to a much quieter stock exhaust before I did notice the sound. I am thinking that maybe it's time for a manual CCT but I wanted to check; I've never heard what a shot one sounds like and gixxers seem to have a reputation for ticking and rattling. Thanks for the help guys.