I have a KitchenAid KDS-20. I love it. I need to make some repairs and I need help finding part numbers and where to purchase parts. The motor is leaking around the seal so I think I need a new seal or gasket. I can't find the part nunmber. The black seal or gasket inside the dishwasher at the hinge at the inside bottom where the door opens needs replacing and I need that part number. Any help would be appreciated.