Architecture\Solitude\SHMd_Apothecary.nif
Discovered while doing placement fixed. The grey stonework at the bottom of the wooden pillars needs to be extended so the mesh will rest flush with the ground it's on in Solitude.
Visible in CK with form 000a6e59. This can't simply be lowered because it will disrupt placement of other things around it, including the door to the interior which would in turn require disrupting the navmesh.