Ah, you didn't look closely enough. They all use link and pin couplers. The reach bars are used on disconnects to hook the trucks together. Better than just relying on the load to pull the train. Links and pins were never left with the car due to thievery, so slugsmasher just leaves his off. Elvenor had both an A and B coupler with one having the link an pin and the other just the pin. It would be nice if someone came up with a script that would add the link and pin mesh when coupled, but I'm no scripter.
Norm