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wind, the empty car now stood more than 20' tall! Before the success or failure of this technique could be judged, it became a moot point when someone realized that the InterBox Connectors (IBC's) that locked containers together on ships could be used on trains too. Seemingly overnight, the bulkheads became nothing more than decoration. Gunderson's subsequent double stack designs had no bulkheads. Ironically, the Twinstacks are so rigid that only a couple of wrecked cars have been retired with the rest of the fleet intact and in operation to this day. We set out to push the envelope on this model. The car is ready to run with free standing brake detail and scale sized open lattice floors. The distinctive circular depressions on the inside faces of the side sills are accurately reproduced. The end platforms and grab irons are made of etched stainless steel to better reproduce the open gridwork of the prototype. The model is semi-permanently coupled together to make handling and railing the car easier. The model is designed to run partially or fully loaded and container weights are included. If the car is to run empty, we follow the guidelines of the prototype, and suggest that you run it at the end of the train. The car halves are assembled with steel pins in the bolster boxes, as that is the only place that one could hide weight. Thank goodness it's right over the trucks! Make sure all of the articulators are free and loose, and away you go!