Thank you Edwardian-
This 14xx still runs with its original Airfix chassis, but with the driving wheels replaced - it runs surprisingly well.
My current project is a Mainline Dean goods for which I am constructing a High Level chassis, which has been difficult. For this it's worth reading Nickwood (of Much Murkle fame) on his project "Dean Goods-High Level Chassis"
I started this long before Oxford Rail offered theirs, but I have no regrets. I remember the advice from a German Rail modeller when I worked over there for a year-- never complete the model or the magic wil disappear. I fear I have taken this to the extreme!