Heres a scary one. I found the masterlink clip coming loose during a general inspection. So i fixed it. Would check before each ride and that darn thing kept coming loose. Meant to order a new chain but i lagged. Sure enough im commuting the TW back home after work. 5th gear pinned on a long straight hill climb. I think to myself "darn.....i forgot to check the masterlink". Sure enough 20 seconds later i here a whack whack!! I know exactly what happened. Pull in the clutch and wonder if my rear tire is going to lock up. I got way lucky. Chain exited without damage to the case or to me. Im commuting in shorts and running shoes. One of the most stupid points in my life.