Netsurf troubleshooting

Hi I'm trying to do a netsurf in GH from an ellipse and curves, everything parametric but I can't make it work. Can someone help me? I can't Divide the ellipse in segments, I'm not able since when i use the divide curve command the output is in points and when I do a interpolate curve is not accurate. This is the result I get when I put the arcs from 0-1 the netsurf disappears.