Odd NetworkSrf Result

Problem43.3dm (2.0 MB)
In the attached file I have regularly spaced frames.

I do a networksrf on them and get this chaos

Any idea way?

There’s a curve with multiple overlapping segments at the curved part. Explode, SelDup , Delete on the curve in the middle of the mess…



I was trying SELDUP but not finding anything. I left out the explode part.