mike, you can interesed for sphere surface and after surface edit, only push s and x together you can scale in x o s and y scale in y or s and z together, and this form do the shape.
I do it very more times, if i can i start the shape from any type of surface presets… and i edit it.
I hope help you…
Its best less profiles if the shape is armonious, in the pic there is the profiles for the shapes and the edit form from sphere surface.
You can understand me?
If the shape have lines more straigh line forms then need it more profiles…
For you i think that this form with less profiles in the cross-section ( final procedure for profile skin ).
Too, you can a revolve nurbs, one nurbs only and then edit the shape, if you do nurb from profile, for you can curvature continuity in the shape in start and finish then you have to put three clicks in the begining of curve and finish in the curve.
i send this files to you…

