Exactrail Thrall/Trinity Gondola

One note to make about the Thrall gondola - after I got it home and put Sergent couplers on it I put it on the layout... and it derailed. Multiple times.

So I took a closer look at it and discovered that the bottom of the brakewheel gear was interfering with the wheels when they swiveled for a curve. The top and middle photos in the article show this piece fairly clearly (go ahead and run it up to 200%). Clipping it off so that it wouldn't interfere solved the problem and does very little visual harm to the model, since it extends back underneath it.