I altered this to a narrow gauge and then lost interest, after a reply on YouTube by 34136TS I thought Hmmmm I'll go back to 0 Gauge.
Well I got as far as this with the conversion back to 0 Gauge.
It's now languishing on the wall but I will be returning to it in the not too distant future.
There is a video here as well
There is also a back story on its own page.