How to control surface with rails and profiles?

Hello Pascal.
Thank you for your suggestions - I think I got the point with equalise points and degree curves :slight_smile:
Also I read more about basics “know how” from recommended lectures:

Degree of Curves: Is there any good tutorials?

I workout with surfaces and would like to ask if there is a way not only to Match Surfaces but more blend it where there is control over “the blending distance” (aka Adjust Curve Blend).

By now there is a “kink” which I would like to diffuse/blend but … I don’t know how :frowning:

Thank you for support,
Codi.

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