Hey there CCT, how is your project going? Have you got her up and running? I sure appreciate you sharing the journey. I found the parts at Atlas to convert the 3-rail couplers to scale. Just have to terminate the wires going to the removed couplers. I feel I have a challenge adding a battery pack to the tender along with a DCC receiver and Controller. But after removing the TMCC hardware there’s a good chance it can work.
Larry