Thanks everyone. My local gunsmith George Scavello had a titanium and a steel pin in stock. It was quite easy to install. Everything goes "BANG" once again. I'll be keeping the new steel pin as my back-up spare.
I have never changed the firing pin spring! Maybe having a snap cap and releiving the spring pressure when casing the BT-100 has made a difference. I have replaced the top lever return spring several times. My BT-100 has served me well.
TexasJohnO was correct!! Once I replaced the firing pin I still had some primer hits with no ignition until a second hit. I stretched the hammer spring for a test and it solved the problem. I just ordered two new hammer springs and a new top lever spring from Brownells. Thanks everyone. Bob