The headstock assembly of the RKKYs have quite an intricate arrangement of horizontal steel rods held in place vertical columns, each of which feature six characteristic circular flanges or ‘rail stiffeners’ (see image below).
Below is an image of the vertical columns in model form. See how the components here have been double etched to capture the flanged appearance of the prototype as accurately as possible? The cost of double etching these components is (to be quite frank), eye watering, but we felt that it was absolutely essential.
This reflects the approach we have taken with these wagons – going to the extreme to get the very best model it is possible to make.