In medium bowl, combine potato flakes, tuna, egg, milk, celery, pimiento, onion, salt and garlic powder. Stir by hand until combined. Form into 12 balls. Combine corn flake crumbs and seasoned salt. Roll each tuna ball in the crumbs. Place on ungreased cookie sheet. Bake at 350° for 20 to 25 minutes or until light golden brown. Serve hot with sauce.