Thanks for the questions. I'm just checking the styles here and they appear to be correct. But I'm not sure exactly what you mean by making the Z-Offset stick?
For Corners the vertex needs to be of the type Corner or Bezier corner to add a corner bracket (for modular styles only, the continuous gutters don't have a corner bracket). Smooth vertices can be used for curved gutters and Bezier vertices will add a running outlet.
I hope that helps, please let me know if you have any further questions.