I wonder if the new non-Wesson family revolver had a trigger different from the early models. I have 3 small frames and never seen a production s&w that was nearly as light or as smooth and the large frame pistol are better yet. Do a little polishing in only the sides and edges of the trigger group and a wolff RP hammer spring and 2 of mine dropped to 2lb SA trigger a 4 1/2lb DA pull. Mine are all monsoon mass area revolvers .