This like all my rolling stock is an E-bay purchase of years ago so not the best quality. After the video I took the engine into the Lionel dealer for a new “E” unit install. I do not know the number of the engine but the dummy “A” is a 2333, one of the “Bs” is a 2343 C, I can not find a number on the second “B”. I probably should get one more passenger car as the engines are about half as long as the train. I do like operating with double B units. Problem is that doing so tends to give the “snake” look.