Smooth surface (complex surface model)

Hi!

I'm modelling a complex surfaces. But I can't get a smooth edge (look at the red line).

I used surface loft and created some splines. I made first a loft of the straight wing and then made a loft of the thicker part (that goes from the big bump to the straight wing).

The thicker part is lofted tangent to the straight loft.

Any tips?

Thanks!

SolidworksSurfacing