I'm about half way through building my Mikado. casting were sourced from Railroad Warehouse (now extinct!). The boiler construction is coming up and hence giving decisions on valves and plumbing. The drawings are very good but refer to part suppliers such as the Superscale Co and components such as Hancock and Nathan Boiler Check valves. I would be grateful if anyone knows if Superscale was sold to another company, or could recommend an alternative supplier? Are Hancock & Nathan valves still available? Regards, Jack.