For the benefit of our UK members, a "Cotter Pin" in US terminology is what's called a "Split Pin" in the UK. It isn't the kind of tapered pin that holds the pedal cranks on a bicycle (not sure what those are called over here).
I'm a bit surprised that people re-use the pins. In engineering school, we were told they were single use only, as the ends that you split apart will fatigue and break off if repeatedly bent and straightened.
Frank and Eileen
No longer RVers or FR owners