Loft glider nose

I'm trying to loft the nose of a glider. I have the fuselage cross section and I'm trying to loft to a rounded point. There are 4 guide curves corresponding to left, right, top, and bottom. I can't seem to get the guide curve to force the loft to have the correct shape. One guide curve pulls the otherside out, and when I select the opposite guide curve it has no effect.

SolidworksSurfacing