Just so we're in the know, the legacy model seems to have a rather... "stiff" way of going up and down elevated rails. The entire base of the train looks like it is rebelling against physics.
Don't know if it's fixable, just wanted to let you know!
Sadly I don't own the space age DLC and you need the DLC to use the elevated rails. So for now there's no way I can test/fix the trains for elevated rails. :(
