Sorry, I got kinda frusturated with this particular model and decided to move to other parts of the assembly in the meantime. (Figured to maybe use Slic3r to do this part.) But you seemed to get along pretty nicely.
Is there a way to get "nightly" builds of Cura 3.1?
If not, in the meantime I'll probably build a special version for just this one part.
I did some analysis on the generated gcode (3.0.4) after some regex wrestling, and from the estimated print time of 7 hours 14mins, ~3 hours 35mins are travels!
Also because of the excess travels due to combing (so retraction extra priming isn't taken into account) the infill doesn't even print because of the plastic oozing out during the moves.