I had the same problem with a broke older Norcold. Couldn't find parts for it. Everyone said they were discontinued and you couldn't order them.
**Call a local RV Mobile Repair guy. They have an inside track to where to find parts for older Norcold.
He came out and had one of the parts on board in his truck and the other he ordered (which everyone else told me they didn't exsist and you couldn't order them) He had that part in his hands the very next day, installed both of them and I was on my way.