Well that’s another book on the list! If I ever get the 0-6-4T done, and want to build something else, I’m mulling over a 4-coupled yoke, which really needs some kind of compensation (I got away without it on the F6 but don’t want to chance it again!). I have one of his other books which has some useful tips on tender balancing for 4-4-0s.
Sorry I can’t make it to Bray to see this gem in all its glory - thanks for letting us see her!