Why should I look at this GH file?
You changed your username to âddrâ 
To summarize, the only thing I used from your GH file are five horizontal curves internalized in the blue group (top left), and of those five, I selected only two (the top and bottom curves), one of which (top) I had to fix to make it planar. Thatâs all, in the purple group.
All the rest is derived from those two curves, using new GH code.