messy sweep

 From:  Frenchy Pilou (PILOU)
10607.9 
I believe that you can consider in your particular object's case the "Scaling Rail" as a third rail!

Ps You have also the middle section overlapped! ;)

else Network works like a charm : Yo have just to close the extremities by a plane if wanted!

EDITED: 4 Mar 2022 by PILOU