Dear Freesurfer's experts,

I wanted to add this picture so you can understand better what I mean by "The ribbon is not well filled". 
Is there a way to fill the ribbon completely ? 

Images intégrées 1
 
Thank you in advance for your help.

PS: If needed here is a link to the picture https://www.dropbox.com/s/wmeez9ajfuvni9r/label2vol_ribbon_not_filled_correctly.png?dl=0

Arnaud