You would have to treat your lacquer finish a lot like an old car with a lacquer paint finish. Fine scratches can be removed by wet-sanding with a fine grit wet/dry sandpaper, then buffed out to a high gloss with rubbing compound, then a coat of carnuba wax to seal the finish. A couple of recommendations when using this method before you try it.....do this with a bare drumshell (no hardware attached to it), use as fine a grit sandpaper as you can get away with. If you choose to machine buff the finish rather than hand buff it, go slowly as you may burn through the finish! Also, pick up some "beeswax", the kind they use for canning jams and such. You want to use this on the bearing edges before you get water anywhere near the drumshell. This will help seal the edges from getting water damaged. Also, when using the wet/dry sandpaper wet, use a touch of dishwashing detergent in the water, it will make it easier for it to glide over the painted surface. Go slow, try small areas at a time until you get the hang of it. As long as the scratches aren't deep or all the way to the bare wood, this method should work fine.