To avoid the snapping problems that some of you are having, I keep a butane torch next to my printer (also great for blowing away little strings and flame polishing after you sand or file away defects). A butane lighter would work in a pinch. Heat up the pins for just a few seconds before inserting to soften them. Seriously just 2 to 4 seconds is usually enough. Keep the flame moving! Keep a damp cloth nearby. Insert immediately after heating. When they are a little bit soft they won't snap as easily and they will "give" a little when inserting. They will also tend to spring back after insertion and harden/cool in about half a minute.