Quote Originally Posted by Markster View Post
The part that wears out is plastic, after all. Logically it could be the age of the plastic and other factors that can make it happen.

Practically, I don't know. Just that the sources I read about this were professionals that repaired and used Canon A's for a living. Something about a bushing wearing out. They would always take an extra bushing on assignments for replacements in the field.

I call BS at the idea of replacing bushings or gears in the field.