Loft Periodic Planar Curves

Hello Friends,

I am trying to loft these curves and for some reason Grasshopper won’t let me do it. In Rhino it works, but it looks rather wonky. Flattening the loft input also does not seem to work. Does it have to do with the order in which the tree is sorted?

Form Study 1.3dm (1.7 MB) Growth 1 B.gh (15.3 KB)

It’s probably because you are adding points at each iteration while relaxing the curve?
Try to rebuild the curves with the same point count from top to bottom, when you’re done.