Warped surface - how to create a smooth surface?

Rhino Rhino for Windows
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Travers Rhino model 1
Travers Rhino model 11502×524 32.1 KB

Travers Rhino model 4
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Travers Rhino model 3
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Travers Rhino model 2
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I could model a smooth roof over the arcs with sweep 2 rail before, but after shrinking the building, it can’t make a smooth surface anymore. How can I fix this please? Thanks in advance!

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Hello - please post a file with all of the inputs to the surface you are making.

-Pascal