Trying to build a correct SOAP Request

I have been struggling for hours trying to build the correct SOAP request using ksoap2 for Android with no luck. The ideal request looks like this:

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Header>
    <AuthorizationToken xmlns="http://www.avectra.com/2005/">
      <Token>string</Token>
    </AuthorizationToken>
  </soap:Header>
  <soap:Body>
    <ExecuteMethod xmlns="http://www.avectra.com/2005/">
      <serviceName>string</serviceName>
      <methodName>string</methodName>
      <parameters>
        <Parameter>
          <Name>string</Name>
          <Value>string</Value>
        </Parameter>
      </parameters>
    </ExecuteMethod>
  </soap:Body>
</soap:Envelope>

I am using the following code to generate my request:

    SoapObject request = new SoapObject(NAMESPACE, METHOD);
    request.addProperty("serviceName", SERVICENAME);
    request.addProperty("methodName", METHODNAME);

    SoapObject nestedParameters = new SoapObject(NAMESPACE, "parameters");
    SoapObject param = new SoapObject(NAMESPACE, "Parameter");
    param.addProperty("Name", name);
    param.addProperty("Value", value);
    nestedParameters.addSoapObject(param);
    request.addSoapObject(nestedParameters);

    SoapSerializationEnvelope envelope = 
            new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.setOutputSoapObject(request);
    envelope.dotNet = true;
    envelope.implicitTypes = true;

    envelope.headerOut = new Element[1];
    Element header = new Element().createElement(NAMESPACE, "AuthorizationToken");
    Element token = new Element().createElement(NAMESPACE, "Token");
    token.addChild(Node.TEXT, this.AUTH_TOKEN);
    header.addChild(Node.ELEMENT, token);
    envelope.headerOut[0] = header;

What ksoap2 is building is:

<v:Envelope xmlns:i="http://www.w3.org/1999/XMLSchema-instance" xmlns:d="http://www.w3.org/1999/XMLSchema" xmlns:c="http://schemas.xmlsoap.org/soap/encoding/" xmlns:v="http://schemas.xmlsoap.org/soap/envelope/">
  <v:Header>
    <n0:AuthorizationToken xmlns:n0="http://www.avectra.com/2005/">
      <n0:Token>string</n0:Token>
    </n0:AuthorizationToken>
  </v:Header>
  <v:Body>
    <ExecuteMethod xmlns="http://www.avectra.com/2005/" id="o0" c:root="1">   
      <serviceName>AHAWebServices</serviceName>
      <methodName>MemberDirectory</methodName>
      <parameters i:type="n1:parameters" xmlns:n1="http://www.avectra.com/2005/">
        <Parameter i:type="n1:Parameter">
          <Name>string</Name>
          <Value>string</Value>
        </Parameter>
      </parameters>
    </ExecuteMethod>
  </v:Body>
</v:Envelope>

I have a feeling that the problem is in the header with the n0 prefixes but I have no clue how to get rid of them. I removed them from from the body by setting implicitTypes to true but I cannot find a similar setting for the header. I am new to SOAP so any other advice is greatly appreciated. Does anyone have an idea of how I could fix this?