V divisions at set Z values

I am lofting a surface from profiles 11’ feet apart vertically (red line).

When I create a uniform UV surface box on my loft, as you can see the Vs (green) don’t align with the even floor increments. I am guessing this is because the shape is being stretched.

Is it possible to create a V division at a given Z value?

Can’t tell exactly without a file, but it seems that you’re using different a lower number to divide tbe line

Here is the file. You will find the code in question in Box Morph Panels.

Thanks!
unnamed_NEW.gh (74.7 KB)