I've got a long road that seems to split the difference on interacting w/ the terrain. It appears that the outside of the curves attach to the terrain, but the inside of the curves are independent. The attached image is an example, and I've turned on shadows to show the gap between the road and the terrain. I've tried various road widths, max. segments, curve smoothing, number of curves, and sub-grade height, but nothing seems to have much of an impact. The plug-in works with more simple curved forms (also attached), but haven't found a specific 'number of curves' that work consistently or correctly to use that as a guideline. Please help!