Makes perfect sense. no unusual materials. just weld in new pipe and pump,.Pretty soon they will; have found the perfect local material for making nozzles, the toughest ceramic or clay or metal part. It always works that way. After they replace it a few times they’ll start looking for an alternative. It will end up being Somethiing Koen will not have thought about. Unless he’s still available to ask what to do. Then they’ll just keep doing doing what he tells them. But still someone will figure it out…Poor People everywhere operate that way. They have some kind of survivability meter that is different than people that have too many options. And like Koen said, he’s looking for optimal performance, they’re just trying to make a pump run on charcoal.