Hi steve - also on your particular case there did you happen to adjust the "Bulge" slider all the way to the left? That kind of looks like the result you'd get if you had done that - when you slide the bulge slider to the left it basically reduces the influence of the blending and a very low bulge value will look like the kind of result you have there.

It can help a lot to post a 3DM model file along with your question, because that then allows for various kinds of examinations of your model which are not really possible to do just by looking at a screenshot.

- Michael