The Great Central 60ft corridor carriage files have been withdrawn from the downloads section of gauge3.info since I am in the process of re-configuring and adding to the available diagrams.
A sample of a test print from the revised files is attached (printed in grey hyper-PLA on the Bambu Lab P1S).
Further developments as to availability of GCR carriages will be announced in due course.
GC1.jpg GC2.jpg