Pleased about this, there was one at Preston for a while and one at the Leyland sidings near Euxton. Rumour has it that the Preston one had to be permanently coupled to a wagon otherwise it wouldn't always trigger the track circuiting and would 'disappear' for a short time. So, in a similar but smaller vein, hopefully there will be sufficient room for a decent 'stay-alive' in it, as I fear for it's progress over my dodgy pointwork!