Yeah I tried a very good scratch remover that I have been using for years and it leaves a shine on the Matte afterwards, use nothing that will polish or an abrasive on the matte finish, hopefully someone will come along with something, maybe try the Dr. Beasley matte cleaner, let us know what you find, then I think your best bet is to get a quality matte finish sealer on the paint and use a car wash soap designed for matte finish. Good luck