I've been riding a ton the last 2 weeks and my outer chain went from being tight 2 totally shot while my main chain hasn't stretched at all. the side plates have a bluish color and all the links are loose. o rings are still there but not tight at all . my only guess is now that it's almost spring my ground speed has been much higher for longer periods of time and the side cover doesn't allow enough airflow to cool it with the tight backwards Bend of the adjuster. I have been riding 3 days a week since October so I will be changing out the main chain also before next season even though it seems fine. the sprockets still look great the adjuster roller has some flat spots but does the job. I drilled some holes in the side cover and threw another chain on to get me through the rest of this season.