Found your issue, Edge Srf component does not always build the surfaces with the same edge order. Solved this in your code by grafting the lines and putting them thought a loft instead further back towards the start of your code. Then used another loft with your curves at the end set to straight and closed to make the box sections.
I have only done it for the part you said was not working and not changed the Edge Srf command elsewhere in your code other than in the white groups.
The issue of why it is hard for you to see what is wrong is that you do not understand data trees. This definition is very big for no reason (a lot of copy paste of the same process) So it is very difficult to look at. I simplified the first part of your definition so you see what I am talking about. I am sure it can simplified even further, didn’t have much time. Specifically the part I circled should never happen. Purple is what you had, green is how I changed it, result is the same.
Hey,
thx for the Help. Yes i dont use data trees correct, I dont know them well. Its my first project in GH. There are many try and error faults, it grows when i work on it. But i opend your file and its not the same, and i dont know what happend there so i cant fix it. But i solved the old problem.
I will google Data trees and i will try to learn something about it to make better files.
The results in the part of yours in my file is the same result of what I did in my file, just some values are different. I did not use your entire file. Too much to sort out.