Hi, I think my gun is triggered like your Tobin. Perhaps I can use a magic marker on my snap caps and figure out what is going on as far as what the triggers do on S and D. One problem I have is that a salesman from William Larkin Moore and Sons told me that you can change the lead barrels by manipulating the safety - I probably misunderstood him - but I'm having a hard time getting that idea out of my mind. We'll figure it out eventually.