The first print was too tight, and the second print was too loose. The third print was just right! So after playing with the action for a few days and showing it to my friends, I soldered some .010″ phosphor-bronze wire to some custom-made brass tube bearings, and assembled the truck. Honestly, it could roll better, but that may improve with a little lubrication. It definitely equalizes nicely.
The retaining nut was also custom-fabricated. It includes a groove and an integral washer to keep the wires where they’re meant to be. Using horizontal tension, rather than the original vertical tension to make contact should help to minimize the interference with tracking. Moreover, the nut doesn’t have to be tight to ensure electrical connectivity, so the whole truck will be able to rock to follow uneven track.
Pembroke:87 
Rene – WHen will these go into production and be readily available…..?