The pins in a lock have two parts (or two separate pins, depending how you look at it): the bottom part that should stay below the shear line and make contact with the key, and the top part that goes above the shear line and is always in contact with the springs. These pins are generally tiny cylinders, but on this particular lock, two of the "uppers pins" were actually shaped like the letter I. That is, the diameter of the top and bottom of the pins is equal to that of the other pins, but the middle of these pins is much thinner.
So the question is (er... questions are): are most locks like this? That is, do they frequently have these special pins at either end of the lock to help prevent picking? And what is the best way to pick such locks? It's hard to tell which part of the pin has his the shear line, which is the entire purpose, I'm sure.
I've never heard of these pins before, so anything anyone knows about them is appreciated.
BTW, does anyone know how to put the lock back together?
