As confusing as this is, bear in mind there is no "height of the original." If you've sculpted it into a mountain then it has no single height, so Trainz won't know the height to give to new baseboards. I would like to see a tool that raises or lowers the height of every point on a baseboard, so at least we have some chance of getting them where they need to be. The current tools don't make this easy enough.