I'll have to wait till I get back home to look at the specular color. I just tried a few things with a prop. Keeping the transparency falloff at "0" is necessary, but a white specular color will still leave a ghost image, which is what I'm seeing in my render. Black specular with 0 falloff is invisible. Black specular with falloff=1 still leaves a ghost of the catsuit. I'm starting to think that trying different materials changed the specular color and going back to the material I wanted didn't change it back to what it was and that's why the first render was okay. I've still got to play around with how to get the transmap to be smoother during a render, but finally decided that the rough edges work better with a fur outfit.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon