In regards o the C&S firing pin the reason it's sticking is because the tip has edges tat are too sharp. Take a diamond lap and reshape it to a hemispherical shape at the tip and it won't stick. Note, hand lap only for this task, take it to a bench grinder and you will be purchasing a new firing pin. As you might guess I've been there done that. Yeah C&S should do that from the get go but look at the price, 5 or 10 minutes of time for a true gunsmith to fit these pins would more than double the cost.