This post doubles as an update AND a help request!
Here's a piece of my latest progress on the train:

Now, I centered the image on that little step ladder on the corner of the train for a reason: on the longer cylindrical hopper, this is a bit of an issue. On the long cylindrical hopper, the ladder jerks out, as seen in this image, particularly on the right side:

The thing is, that bend is far enough out to be accounted for in bricks. Normally, I use this to make such small ladders:
1× pole, 1× pole
1×2 flat
However, since it bends outward in this case, I am not certain how to construct it. If any of you have ideas, I would greatly appreciate seeing them!