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

Thanks for the response
Yes this is a trolly type of application on a 12 foot wall unit, It is all new, just being installed. It is brass track PiKo, controls is the same brand, in one direction the power seems to be enough at low speed, when the train reverses it is pulsating an or will stop at points on the track.  It almost seems like one set of wheels are dragging and not picking up power.  Not sure if both sets have power, but that what it appears to be.doing.

Thanks in advance for your thoughts

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