Hi I have been working on my hammer gun right barrel not firing. I have been through the lock, made a new pin, switched pins. Sometimes it will fire sometimes not, today I was fooling with it and the left barrel failed to fire. Now I'm wondering could the springs be weak? Is that common in smiths or am I barking up the wrong tree ? I have held a block of wood against the breech face and it will leave two nice dents, but I'm not sure that means anything. Looking for a more accurate test. I am pretty mechanically inclined and have spent hours on this and tried every logical thing I can . The only thing left that I can think of is the springs. Any thought greatly appreciated. Thank you, Tom