I added a simple champfer to the end of the pin and that pluse tipping it to let it ride over the spring helps get it started. Not sure what he pin is made of, but my bench grinder handled it with ease and that tells me it isn't heat treated. You might take a look at this sticky too. I believe they covered it in there. I did these enhancements on the wife's TCP and that thing has ran flawlessly. http://www.taurusarmed.net/forums/smithing/40279-tcp-738-reliability-enhancements.html