 The other thing is you don't need to set the nail heads down below the surface a lot. Just tap them flush to the surface of the trim board. In fact, that's one of the problems with an air nailer is people overdrive those and they create these little craters that have to be filled with caulking. And then the caulking shrinks when it dries and you can spot them from a distance. You can see all these little dimples all over the place.