Have a KitchenAid Dishwasher, Model KUDR01TJBL1. This dishwasher has developed mold. Tried to clean with vinegar per KitchenAid Helpline and very little success. Black mold located all around below the filter screen. Have been unable to remove the screen for cleaning. Is there a liquid product that could be sprayed in to that area to kill the mold? Other than the mold problem the washer seems to work fine.