Hello Yoav,
Can you please check which is the version of the Nevron Assemblies you are currently using. By default the Layered Graph Layout centers each parent node to its children nodes. We have released a service pack which allows you to configure either to use this behavior or to equally distribute the nodes.
You can download the latest service pack from the downloads page: http://www.nevron.com/Downloads.Download.aspx
Best Regards,Nevron Support Team
Hi Yoav,
You should be able to download the latest service pack, build version: 10.4.14.12