I often stone the bosses for the studs, where the rebound slide rides, . Never found much need to mess with a S&W sear, except the double action sear which must be right to get a smooth transfer from it.
I have round butted guns, shortened grip frames, chopped barrels, changed barrels, reamed cylinders, cut off hammer spurs, milled and installed adjustable sights, cut cylinders for moon clips and about anything else you can do to them.
In other words, I make them the way I want them. I have plenty that are bone stock too.
Hows this for a modification.Shoots 45 colts or 45acps.
Here is what started as a 1917, added adjustable sights, installed a cut down 1959 barrel and cut down and rounded the butt.
How about a 25-5 with barrel cut to 5" and a m0del 29 recessed cylinder fit to get a pinned and recessed 5" 45 colt.
The front gun in this picture started life as a 10-2, now has a recessed 19 357 cylinder, round butt, adjustable sights and a 2 1/2" 19 barrel.
I have as much fun making them what I want as I do shooting them.
Have a round but 10-6 that has a 22 Harvey Kay Chuck cylinder and a 6" K22 barrel. It has a spare cylinder to shoot 22TCM.
Also have a Brazilian that has a 45 colt cylinder and a 4 1/4" 1950 barrel.
I have another Brazilian and a couple 28-2 that will be something else someday.
Present project is an XP100 becoming a 6mm Remington.