I decided to put noiseless pickups in my Highway One and since it was going to be taken apart decided also to sand down and polish the matte finish. This is small potatoes for many of you guys who build guitars but a first for me. Here it is wet sanded down with 800 grit then 2000 grit. Sand until there are no more shiny spots. The finish should be completely dull. Use a sanding block for the flat surfaces. Don't sand too much or you could blow through the finish.