Originally Posted by jazzy_cyclist
I could see how they might have failed to push the pin quite all the way in during assembly, and it might fail, although I would have thought that it would happen before 2 months had elapsed...
If the pin wasn't seated all of the way in, the bike would've had a slight "hitch" in it's "getalong".
IME, the pin will fail more often if the link that the pin was installed in was tight and someone tried to loosen it by pushing the pin back and forth until the link loosened up.