Brought home my new baby yesterday.(Not the same kind of baby that red dirt Texan or Taurarious recently brought home.)
It looks OK, and I don't see anything particularly wrong with it, but the trigger is very heavy. Almost 15 pounds.
I bought a model 629 about five years ago, and the trigger was about 12 pounds. So I sent it back to Smith for their action job, and it only took off about a pound.
Not worth the money and effort.
Dry firing it a lot seems to have helped more.
I'll probably have my local gunsmith do a trigger job on my 640 and then just do a lot of dry firing.