[Freesurfer] Filling in missing ventricles in WM

Hi Freesurfer Experts and Antonin,

About an earlier question on XL Defects

I have used your suggestions to check the orig.nofix surfaces and I think the skull and missing ventricle voxels are causing the problem. Picture pasted. I have  removed the WM voxels in the skull, filled in the ventricles by adding WM voxels (brush value = 255 ), and ran the commandrecon-all -s subject -autorecon2-wm -autorecon3 Recon-all was completed successfully and the surfaces look good. However, the aseg volume in the lateral ventricles are still wrong.At the crosshair, the WM value is 255 and the ASEG value is 0. Should I be editing the aseg now? Or should I be doing something else to the wm.mgz? Appreciate your tips!Best Wishes,Shane