I do like blogs that are about making things which show craftsmanship, this is a classic scratchbuild.
Split frame electrically connected compensated bogies using copperclad as a spacer then compensated back to the driving wheels. Thats the same method I use and like you I see a huge improvement in track holding and pickup.
My influence was also reading Mike Sharmans work many years ago, and one ends up with locos that perform well.
Interesting too see the uninspiring colour choice from Austin - the early 50s were a very drab time. I can't imaging a car manufacturer offering four different shades of grey now!
I'm sure your knowledge of the characteristics of different papers will be of interest to many on here.