Take a Dremel power tool and use the little felt polishing wheel thing and some of the polishing compound from Dremel and polish up the pins,transfer bar,main spring strut,and other moving parts(aren't very many).Then install lighter springs if you want to.I have used the lighter springs for years and have had no issues with failure to fire.Just don't get the lighest springs available.Or you can just clip off a couple of the coils on the main spring and that will lighten it some.You will notice a difference after polishing things.Just don't mess with the hammer or trigger notches.