Help,  Peter Witt trolley car operating on a mental application when the train reverses direction the front truck is not operating, just drags to the other end.  If I turn the train around on the same track it works fine.  However, the doors are on the wrong side of the layout.  Is that just the way it works or am I doing something wrong

Thanks in advance for any advice or help

Push pull application trolly struggles at low speeds or stops altogether,  any help would be greatly appreciated