My Pedersoli Kentucky pistol had a very Heavy trigger pull ( would you believe it needed two fingers on the trigger?). This was due to the sear spring tension. Try removing the sear spring, cocking the hammer, reassembling the lock into the stock, then trying the trigger pull. When I did this the trigger pull was much, much lighter so I started working on the sear spring. I have removed about two thirds of the width of the lower leaf of the spring and the pull is about where I want it to be. Since you can't put metal back on just go slow. I usually did my work after a range trip where I checked out my earlier work. Any excuse to get to the range.