GizBat

It turns out the solution for this model is to use a modifier mesh where required to add top layers to infill these holes.

Hi @MariMakes The same issue has cropped up for me - likewise printing thin wall aircraft models (A Joker from 3dlabprint) Where wall transitions rapidly to near horizontal they become very spaced out with holes in between as you can see in this image. Various wall transition settings haven't yet provided a solution for me. This shows how it should slice (old gcode) I expect that many aircraft parts which rely on single wall prints and complex curvature will experience this issue in slicing. If this is something the team has time to look further into I've included the project in a zip. Thanks! Jkr_Wroots.zip