I have spent the last few weeks still finding my around max and trying different methods. I've started my circuit 4 times using various techniques. None of which have quite worked out. Yesterday I started from the beginning and decided to try the loft technique. I drew my centre line using a smooth/smooth line. Normalised the spline to 10m. Then used the Glue plug in to attach it to my terrain. I then carefully refined the elevations so it all looked flowing. Then detached segments for straights and corners and bends so I was left with about 20 separate splines. I then normalised each spline. 4m for straights. 2.5m for gentle bends. 1.5m for tight bends. I again carefully checked it all. Then attached everything back into one spline and welded all the verticies. I drew a 10m cross section line, and lofted the main spline. And now the problem! Whilst the loft is generally flat, it is not flat, it twists all over, usually giving off camber banking. Whilst I will need to add banking (I will follow VirtuaLM's vid tutorial) its too much of a mess to start with. Is there a way I can loft so that my new road surface will be horizontally level all around the circuit? I'm wondering if the path verticies need to all be corner or bezier etc..? Many thanks.