Went to work the other day and 20 miles in at a stop light I notices a rattling noise and the bike started to run rough. I pulled into a WaWa quick mart and parked. Removed my helmet and turned on the bike and it sounded like Marbles in a can. and it was a little rough. I got an Uber to work an called my wife to pick me up after work and bring the trailer. I have a bike caddy (one wheel in a chock) tow behind. Haven't had a chance to look at it but I'm guessing the Cam Chain tensioner is toast. Replace it 50000 miles ago. Bike has 100738 miles to date.