The end face had 17 edges. I think that qualifies as an ngon. The image I posted was hidden wireframe to show just the profile, whereas I probably should have shown the full wireframe and verts. Most of what you said, Morkonan,is included in that tutorial package mentioned by kljpmsd, including a very good section on smoothing and crease angles. Thanks for the input, though. Just starting out is the best time to avoid bad habits...