Start with the assumption I don't know what I'm talking about---I don't run Lionel. However, he earlier described the coupler having to shove the train backward to allow the coupler to disconnect. That can only happen if you are sitting still.
His uncoupler is immediately before the turntable. That suggested he wanted to stop, disconnect, roll just the engine onto the turntable, and rotate to get it out of line with the rest of the train and presumably, bring out another engine.
My suggestion was to move his disconnect track back from the turntable by one track segment. That would allow him to disconnect while still slowly approaching the turntable: coupler would be able to open easily instead of trying to shove the train backward, if that was the problem.
Again, I'm probably way off base, but that was an easy solution to what I thought he was describing.[/QUOTE]
If you are pushing the car into the siding it won't uncouple because your PUSHING the car and you will be not unhooking as you are pushing the coupler, in order to make it work you have to be PULLING the car over it to work.
The huh was for "to it's 10 o'clock on the same line", <=huh? 10 o'clock?