FWIW, Smith told me the factory sets trigger pulls at 4.5 lbs SA, 12 DA.
I have a new K and L frame and while I would say the SA trigger is a bit heavy for my tastes the break is clean. I'm inclined to just let them wear or lap in naturally.
Sight mods mentioned above are interesting though. If you can't see it you can't hit it, no matter how slick the action is.