I wrote in recently about my parcellation troubles with an ex-vivo scan (link). Digging further, I've found that the surfaces I've produced following the Ex-Vivo recon instructions are oriented properly when viewed in freeview (freeview -v mri/orig.mgz -f surf/rh.white:edgecolor=blue surf/rh.pial:edgecolor=red), but are misoriented in tkmedit (tkmedit $SUBID orig.mgz rh.white). I suspect that something related this might be the source of the parcellation problems. Any idea why this might be and how I can fix it?