user clip planes & evaluators issue


Im using 6 user clip planes to clip some geometry against a cube in origin with a size of 2.0; When I use most glut* shape functions, it works fine( clipping where it should be) but when I use glutSolidTeapot all polygons get clipped. Looking through the source code from glut I saw that they use evaluators to render it.
Are there any known issues between clip planes and evaluators ?. Im using a GF4 TI4600 with 28.32 driver.