Starting an overhaul on '77 Holiday Rambler Wide World

Hey folks,

I'm trying to locate new burners for the stove. I'm not sure what they're called other then "burners" but every google search comes up with whole stoves. I think it's probably good to replace the aluminum burner itself...they are the parts where the flame comes out. They lift completely out and there is some rust on them and they are disgusting covered in food and all. I know I could clean them but not sure about the rust part so thought it would be best to replace them.