Just replaced the things. Had to reuse old tine rows, rollers, the spray arm, etc., i.e. I removed 'em from the old racks and put on the new ones, but that was piece of cake. Also, I cleaned the food grinder and the discharge valve compartment (thank you very ???? ???? much, Internet), so spray arms around the top rack get enough water pressure now. I didn't have to buy any parts for the latter part of this little repair project, though.