RE: Fiber optic pin breaking.
I had the same problem with mine too. What I did is take some 5 min clear epoxy and use it to fill in the gap between the fiber and the pin. I do alot of hunting in thick stuff,(moose hunting) and was allways breaking a fiber by sticks or what-not, but since I have tried the epoxy trick I have not broke any, and the pins are as bright as they allways were.