I went back to my original OBJ before I split into body parts. Reworked the trim mesh so that it had more points to deal with when I thickened it. That way the transitions were smoother. In the jacket area I either connected points that were leaving an open gap in the mesh or I deleted the points and added in new ones. Then went back to UVMapper and set up my groups and materials. Brought it into Poser, sized it the way I wanted and then exported out of Poser.