Interface calculation in cura

[jaiboot 0]

Hello all,

I have some questions/ concerns about how interface material is generated in Cura. What it looks like right now is that the interface is generated at a constant distance in z off of the overhanging structure. Here is a picture of what I mean.

https://drive.google.com/file/d/0B_xOKKb7IzNCbE1qaDVRWm9xUm8/view?usp=sharing

When my interface layer thickness decreases to something around 0.5mm, the support interface completely disappears on shallow angles.

https://drive.google.com/file/d/0B_xOKKb7IzNCMTRzbjB4OWlYZDg/view?usp=sharing

Here is a link to the part I'm using. Let me know if this all makes sense.

https://drive.google.com/open?id=0B_xOKKb7IzNCQXNBU3RtYzZSRDg

Thanks!