The rule of thumb is to plan for machines having 80% uptime. Mind you, new lines, and especially new technologies are often a clusterfuck until they mature and you really understand the quirks of trying to do what you’re trying to do with them. But yeah 20% retooling would make sense if they have a lot of models and a really complicated retooling process, but if that’s the case, well listen, I believe it, but I’d be asking questions about how to cut the tool change time down.