The only file that I needed to change is the wsdl.xslt file that you can download at http://www.mathertel.de/AJAXEngine/ajaxcore/wsdl.xslt.
The documentation of the SOAP client and the proxy generator can be found in the book at http://www.mathertel.de/Ajax/AJAXeBook.aspx
It's also integrated into the new downloads.
Read about the SOAP Basic Profile at http://www.ws-i.org/Profiles/BasicProfile-1.1.html
Read some arguments against the SOAP encoding at http://msdn.microsoft.com/library/en-us/dnsoap/html/argsoape.asp