Hi all, I'm trying to run some 3T data through freesurfer and encouter a consistent problem in the cuneus/occiptal lobes where the pial surface fails to extend the the grey/CSF boundary and instead follows the white surface. I have attached an example. This problem happens in the same area across a substantial proportion of my images. I've tried control points, but they don't seem to help. Any suggestions would be greatly appreciated. Thanks, Alex