I would try a heavy coat to loosen up the existing application, let sit 5 mins MAXIMUM, and wipe off the excess with a microfiber cloth. I used the kind of microfiber cloths designed for cleaning windows and camera lenses. Not the fuzzy kind, use the with a real smooth very tight weave, almost like satin. You will ruin your expensive cloth, but additional lint sticking to the cladding will not be an issue. Hopefully it will take off the accumulated dust too. After your heavy coat to try to work out the errant dust etc... try a couple more VERY light coats one coat later that night, and one the next day to completely work out he swirls and streaks. I'm not an expert with this stuff, but have used it enough to get a feel for its qualities.