The same here John.I saw a kingscourt train near Navan just at a level
crossing north of the town when I worked in Dublin some 20 years ago.
This line had a number a crew operated LC gates which appeared in two
New Horizon videos.One of my favourite photos appeared in Rail Express
in the late 90s showing a double headed 121 near Nobber with gypson
train.The line did lack any big engineering such a viaducts and tunnells
hence my love of the Waterford -Ballinacourty branch,and quite out
of the way level crossings.
As regard modelling a gypson train,the Shapeway ballast wagons would
do the trick nicly.