I have an '03 Warwick Jazzman with the satin honey violin finish, and the rear upper side of the bass (above the straplock) has developed a pair of small white splotches in the finish. They don't protrude through. I was wondering if this is just a wax or oil type finish if I could get some extremely small grit sandpaper to remove them. If so, what could I buy to refinish those areas after the sanding? Any help would be greatly appreciated. Thanks.