If you remove the grips you will see a stirrup type (hammer) spring that hooks over each side of a pin that goes through the grip frame. Unhook one side, and put the grips back on. This will reduce the spring tension on the hammer, lightening the pull a bit. Take the gun out and do a lot of shooting, if you get misfires, re-hook the spring. If it works perfectly and reliably, leave it that way, or buy a spring kit, disassemble the grip frame & replace the springs. Some guys cut the leg off one side of the spring, but it's not really necessary.