Loft isn't producing surfaces between two clean -seam adjusted- curves?

Grasshopper
5

Debrep adds another layer. Say you have a bunch of boxes {A;B} half inside of list (0;0) and another bunch inside of (0;1), to make sure that each box has it’s own list of vertices you need that extra layer {A;B;C}. There was a great reply by @DavidRutten recently on this topic.