API Manager with .NET WCF services

I Have configured a .NET WCF service to work in API Manager and when I test with SoapUI it works as expected. Accessing from my client .NET application (updating only the URL in the binding) I get the following error. How do you pass the token from the .net client...I don't think there is a syste.servicemodel configuration item for this?

  Message=The HTTP request is unauthorized with client authentication scheme 'Basic'. The authentication header received from the server was 'OAuth2 realm="WSO2 API Manager", error="invalid token", error_description="The access token expired"'.
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at ConsoleApp4.ServiceReference1.IService1.GetData(Int32 value)
   at ConsoleApp4.ServiceReference1.Service1Client.GetData(Int32 value) in C:\DEV\ConsoleApp4\ConsoleApp4\Connected Services\ServiceReference1\Reference.cs:line 122
   at ConsoleApp4.Program.Main(String[] args) in C:\DEV\ConsoleApp4\ConsoleApp4\Program.cs:line 18

Inner Exception 1:
WebException: The remote server returned an error: (401) Unauthorized.

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