You can also use a drill press, (POWER NOT TURNED ON), and a wooden dowel. Using different diameters of wooden dowel rod, round over the ends of the rods. The different sizes of rods are needed for different size dents.

Place the trim upside down on a sandbag type surface and slowly PRESS the dents out. This way allows you to control how much pressure is applied and exactly where. You might try the technique on one of the less prominent areas first.

Fred