"Racks were rusting"
For what these machines cost, I would have expected KA to have used stainless steel or Monel for the racks.
I've seen pictures of early Hotpoint dishwashers that had uncoated metal racks, but don't know if they were stainless, Monel, or plated steel.
The one pictured has the plastic coated racks. Was it a later version of the 10, or are they replacements?