Isolines / Curved surface lines

I am attempting to print some legacy 3d documents, however all curved or cylindrical surfaces are printing with surface lines on them. In my legacy AutoCAD software, I was able to remove these lines by setting DISPSILH to 0. I need Hidden Lines Removed when I print, but I would like to remove these curved surface lines as well.

Currently, I have

  • ENBLSLHEDGDSP = 0
  • LGCYISOLINES = 2
  • LGCYFACETRES = 1
  • Viewport shaded view = hidden

Are there any settings I've missed? Is there something else I can change to remove these surface lines?