XmlDictionaryReaderQuotas content length quota (8192) error during client send to wcf

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WCF

Silverlight4

I have a silverlight app (non asp) and wcf service.

When i read large data from the wcf service 60k+ then the silverlight app successfully retrieves the information from the wcf service.
However....
When i try to send (silverlight client to wcf service) large data 30k+ I get the XmlDictionaryReaderQuotas error but when I send 2k information then everything works fine.

This is my ServiceReferences.ClientConfig file

<system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="BasicHttpBinding_IService1" maxBufferSize="2147483647"
                    maxReceivedMessageSize="2147483647">
                    <security mode="None" />
                </binding>
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://localhost:1320/Service1.svc"
                binding="basicHttpBinding"
                bindingConfiguration="BasicHttpBinding_IService1"
                contract="ServiceReference1.IService1"
                name="LargeBuffer" />
        </client>
    </system.serviceModel>

And this is my wcf service app.config file....

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="LargeBuffer" closeTimeout="00:01:00"
          openTimeout="00:01:00"
          receiveTimeout="00:10:00"
          sendTimeout="00:01:00"
          transferMode="Buffered"
          maxReceivedMessageSize="73400320" >
          <!--70MB-->
          <readerQuotas maxArrayLength="73400320" />
        </binding>
      </basicHttpBinding>
    </bindings>
    <services />
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  <

/system.serviceModel