John D's design replaces the Kadee centering spring with a simple piece of phosphor bronze strip that maintains a minimal load on the rear of the shank to provide centering without allowing the coupler to travel excessively back into the box. As already stated, there is plenty of slack action just in the knuckle.
Jim King President, Smoky Mountain Model Works, Inc. Ph. (828) 777-5619 <www.smokymountainmodelworks.com> Trainmaster, Craggy Mountain Line RR <www.craggymountainline.com>
