I started off modelling the basic shape in Nurbs, then converted to Poly to tweak and add some finer details which is fine. Then I convert to SubD to create further details etc, now when I convert back to Poly to split polys etc, my model appears to stay the same, ie it appears almost smooth with high poly count which is very frustratin when I now I have to alter loads and loads of vertices rather than just a few. Why is my mesh now so busy and how can I keep it down?