The gouges probably have ridges on each side of the gouge, so sanding the high spots flat is worth a try. The gouges will still be there, but the pads may ride over them without pulsing. I don't know if the gouges will still cause brake pulsing after the ridges are flattened. ( I sanded down the uneven pegged joint on my rim a few years ago, and it worked great. )
Aluminum is very easy to sand, so you need very fine sandpaper, and a light touch. It's quite easy to sand down too much, which makes a dip in the rim. A sheet of wet and dry 400 grit would be good. Wrap the sandpaper around a flat piece of wood. Wet the sandpaper and just do a couple of light strokes. Wipe off the rim and see how it feels when braking before doing any more sanding.
Last edited by rm -rf; 09-06-13 at 04:46 PM.