I noticed several of them in the dead-fridge storage area of a Camping world near here - don't know if they would let you have a piece though. Also, I helped a neighbor take a washer to an appliance recycling place and noticed they had at least two dozen Dometic and Norcold fridges. A place like that may give of sell you parts.
Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2004 Forest River 25RKS many, many mods.
You might check with McKinney RV Sales/Svc in Red Bay AL. 256-356-8634. They have all sorts of used, parted out refrigerators sitting around. They get surplus items from Tiffin but they have & repair other RVs, too.
I ordered parts for my fridge and A/C from these folks PPL. Got the parts in 2 days, that was fast, I only paid for the regular shipping. Just find your fridge model from the list, some have a parts breakdown too, also some items have pics and some don't.