@smartavionics, thank you for your work, I downloaded Cura-mb-master-20190114.dmg bt I can get to slice using a single line a very simple design.
As you can see is a single line but Cura keeps breaking the wall, unchecking Print Thin Walls, make part of the wall disappear. In Slic3er the wall is made perfectly in a single pass..
Z-84 Wing Leading Edge.stl
Z-84 Wing Leading Edge Slic3r.gcode