I have a friend who has a black hole theory about disappearing springs.
They DO tend to disappear when they are most needed, and reappear when you have already replaced them - where you would least expect them to be. I believe it is a natural law.
Based on my past experience, I would agree with you 100% (a spring will get lost until you buy a new one to replace it). However, I had a "spring miralce" last month. I was at the shooting range (with my Bersa Thunder) and the pin holding my extracter slid out (it was not seated all they way). When I got home that evening from the rang