Originally Posted by
mcours2006
Then you have never had the retaining pin that holds the spring-loaded clip come loose during a ride. Unlike the 105's and higher, the pin on the 550's is a pressed-in pin, not a threaded bolt. I've repaired it by pressing it back in with some super glue and they're still good after some 20,000 km, but the point is I shouldn't have had to.
You're right, I've never had that happen to me, after probably about 10,000 miles riding those pedals.