Vectors and Arc SED

Still having hard times with Arc SED, for some reason.

I have two problems:

  1. Can’t create correct vector for multiple arcs to create a pattern. I want to shift start point to the middle of the segment. See attached screenshot. I also tried a surface split to separate different element of the pattern, but it returns invalid surfaces ? (19.0 KB)

  2. For some reason indicated Arc SED is not parallel to Z vector, actual arc is rotated.
    I tried to replicated same scenario in a new file and it works. What I am doing wrong? (58.2 KB)