Hi there,
Has anyone else noticed how if you make a surface-loft between to closed sections which are symetrical about X and Y, for example a rounded 'ob-round', and use four guide curves, which are symetrical in pairs (one pair in the X plane and one pair in the Y plane) between the two set maintain tangency and advanced smoothing, this surface is not necessarily symetrical and tangent about X and Y. I have the base of a blow moulded bottle which I have constructed in such a way, then I've had to half the bottle and mirror the halves to avoid doubling my feature tree in some areas, and then the base is no longer tangent.
I guess a picture would help here, as I'm not being very articulate, but maybe someone else has seen this and has a comment.
Lee