In the attached image, the automatic layout engine is creating two edges that both have a 90 degree bend in them where the corners appear to touch (circled in red).  From the rendering, it is not obvious whether the lines cross or if there are two 90 degree corners.  I would like to create a small gap between these corners so it is apparent to the end user which line goes where.  Here is the code for the layout engine:

Dim layout As NLayeredTreeLayout = New NLayeredTreeLayout()
layout.Direction = LayoutDirection.TopToBottom
layout.OrthogonalEdgeRouting = True
layout.UseSingleBus = True
layout.VertexSpacing = 75
layout.LayerSpacing = 60
layout.BusBetweenLayers = True
layout.CompactBreadth = True
layout.ParentPlacement.Anchor = ParentAnchor.FirstChildCenter

I tried changing the padding on the shape when the edge is created, but that didn't have any affect.  How can I accomplish this?

Thanks,

--nick