Decades ago I provided a certain amount of technical advice/expertise for a boutique loading business. They had a couple of the first Dillon 1000 series loaders. I'd chided them for a lack of a maintenance schedule. I happened to be in the next room when they had a chain fire in the primer supply tube of one of the Dillons or the tube being filled by the primer tube loading machine.
It was an interesting experience. It led to a rigidly performed maintenance/cleaning program-without my saying a word. I guess being in the room was sufficient preview of the future for the troops.