I am using the following diagram settings

diagram = new Diagram();
diagram.MeasureUnit = GraphicsUnit.Pixel;
diagram.Font = new Font("Arial", 10, GraphicsUnit.Point);
diagram.Bounds = new RectangleF(0, 0, 600, 400);
diagram.BackBrush = new MindFusion.Drawing.SolidBrush(Color.White);
diagram.SelectAfterCreate = false;
diagram.AdjustmentHandlesSize = 6;
diagram.DefaultShape = Shapes.Rectangle;
diagram.RoundedLinks = true;
diagram.RoundedLinksRadius = 12;
diagram.LinkHeadShape = ArrowHead.BowArrow;
diagram.LinkHeadShapeSize = 8;

With the following tree layout settings

TreeLayout tl = new TreeLayout();
tl.Type = TreeLayoutType.Centered;
tl.Direction = TreeLayoutDirection.TopToBottom;
tl.LinkStyle = TreeLayoutLinkType.Straight;
tl.Anchoring = Anchoring.Keep;
tl.MultipleGraphsOrientation = MindFusion.Diagramming.Layout.Orientation.Horizontal;
tl.Arrange(diagram);
diagram.ResizeToFitItems(20);

One of the nodes moves around wildly from very close to very far away from its parent, each time I refresh the page. For example, "Documentation Specialist II" in these two images, which are refreshes of the same page.

[img]http://paulw.us/flowchart1.jpg[/img]
[img]http://paulw.us/flowchart2.jpg[/img]

Is there a way to stop this from moving around so wildly?