Hi, I've created a 3D spline shape of all 90 angles, was hoping to run a sweep nurb along it with a square profile to make it solid. However the sweep just can't figure out how to maintain it's shape and it's twisting and turning and it's a mess. Can someone recommend a method to fix this or even a plugin that would be able to do it? It needs to be able to animate along the spline as well. Thanks!