You have to load all the morphs you want to match into V3 first. The Tailor works by trying to (I think) match vertex movement from the figure's morphs to nearby vertexes in the clothing. Anyway, I use the Tailor all the time on V3 and have never needed a mannikin. I think that has something to do with converting clothing to another figure, or some other use I don't really understand. ;-)