More nose cone work and a problem

I continued to work on the nose cone, adding section, and connecting them to make a solid shape.


I've run into a strange problem. Although my sections are perfectly symmetrical, the solid image is not, as can be seen from the wireframe view.


I think it's back to the drawing board on this nosecone. I know think I understand now that I need to use construction lines during the construction of my sections rather than normal lines. The CAD program seems to be saving the data from my lines even after they are erased. I am hoping if I begin using construction lines extending to infinity with no points, that there will be no data to ruin the symmetry of the solid model.

Total: 201.5 h