Was recently doing a polish and CGW parts install. Somehow I lost the retaining pin for the hammer pivot pin. Went through my baggie of pins and found what I think is a pin for the hammer strut. It fit the orifice but is a bit too long to allow the sear cage to seat fully in place. Sanded down the length until the cage just fit snugly. The side benefit is that this tightened up the cage and removed all the play.