Quote - Oh, and also if I use UVMapper to merge the groups, it won't do any good for Silo, because its soft selection will just stop at the polygon edges anyways.

If you use the OBJ file from the relevant Runtime/Geommetries subfolder, it's an unimesh , i.e. it's one continuous mesh with no breaks at group boundaries. If you're exporting from Poser for some reason, be sure to select the welding option.