Quanon

I think I figured out how you can fix the uvw map and get rid of all those black lines. I can do it, but it might be faster for you, if you've still got some older files where all the spiral tubes are separate entities.

Anyway, I used the face selection tool, and selected all the faces of one side of a spiral (I treated it like it was still a rectangular box). Then I detached those faces to it's own object. Once that side (with all its own polygons) was no longer joined to other polygons on every side, it was easy to make the uvw map straight. Then, I selected the DblSbr03 object and used the "Attach List" command and attached them all back together.