I am having an issue in which the sanitary pipes I created don't seem to follow the surface or the slopes very well. I gave the pipes a minimum slope of 0.40% and a maximum slope of 4.0% in the rules, but when I run the rules it only uses the slopes 0.40%, 1.40% and 2.40%. This happens even when the surface is a different slope than these specific three (e.g. 0.73%, 1.24%). Does anyone know why Civil3D would be stuck to these three specific slopes? Any way to change that (or at least give it different values to follow)?