Following on from the 'basic version' I measured up what was left of the board with a 16" length for fiddleyard, thats a type 2 and shortish freight train (approx equivalent to 2'6" in 4mm which was length of Deadwater cassettes )

So I now have a straight:

banff a4.pdf

and a curved:

bannf curved A4.pdf

version, think I prefer the curved, a few tweaks and I think its nearly there.

EDIT : just to add the tweaks,

bannf curved A4.pdf

a simple alteration to the goods shed line to straighten the bit in the good shed and point tweaked to allow more room between goods shed and other line, likely print this out and add a rough idea of scenery tomorrow.