just wondering if anyone has contact info for him. I would PM him, but if he doesn't log in to check messages, it's probably not worth it.
I messaged him about one last year and got a response, it had been quite a while since he'd logged in then. However he's still looking for folks to send cores that he'll convert. There are lots of off-the-shelf pumps available that are well tested now so you don't really need to get a custom pump built any more.