I have a (what I thought was) fairly basic sweep that I am trying to extrude. The problem is the normal will not stay constant. When I click the "keep normal constant" box it fails. In the attached image the sweep starts at the red circle (see how it is in-line with the rest of the pocket depth) and then by the time the sweep makes it around to the other side circled in blue, it is no longer in-line with the pocket depth and is at an angle. Not sure why it will not just stay normal.