i am doing some editing after recon-all. I have the issue that one gyrus is not captured by the pial  surface. There is no wm that is wrong and that i could correct. It looks like this gyrus has a weird angle so there is actually no WM visible. How can such an error be corrected? I am happy to send a couple images if needed. 

Thank you very much in advance for any help!

Cheers

Carolin