Raymond wrote:Negative on grinding off the pins.
The vertical pin can be pushed down into the plug. (It can be pushed back out when finished through the back of the keyway.) The plug can be rotated so that the bottom pins can be accessed through the holes drilled in the bottom of the shell for simple rekeying.
The side pin can be removed if you must service top pins and springs. It is easier after the plug is turned 45 degrees. Use very small and sharp diagonal cutters to very gently grip it at the base and pry it out. It is splined and can be tapped back in.
You can also use just the edge of a sharp knife or chisel to hook and lift the pin but this is not as easy. Make sure the lock cylinder is VERY securely mounted in a vise to avoid slips and cuts.
I've tried this on many American cores, and the pins just end up mushrooming over, which creates an even worse problem. Using a sharp knife to extract the side pin will create another large problem, one that will have to be solved with a trip to the local emergency medicine clinic.
"Lockpicking is what robbing is all about!" says Jim King.