YQLで文字化け

YQLで文字化けしています。
SHIFT-JISをどうもlatain-1に判定しているようなので、
queryにcharsetをつけるとresponseがnullで帰ってきます。
xhr.overrideMimeType('text/html;charset=shift_jis');
もつけてもだめです。
RESTにforceCharsetをつけてもだめです。
何か方法はありますか？

RESTの定義は以下のようにしています

<?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta> <sampleQuery>SELECT * FROM {table} WHERE url='http://www.google.com' AND parameters='{"headers": [["Referrer", "http://geeklad.com/"]]}';</sampleQuery> </meta> <bindings> <select itemPath="" produces="XML"> <urls> <url></url> </urls> <inputs> <key id='url' type='xs:string' paramType='variable' required="true" /> <key id='parameters' type='xs:string' paramType='variable' /> </inputs> <execute><![CDATA[

			var cookie = "";
			function getcookie(headers, cookie) {
			  var cookies = headers['set-cookie'];
			  if (cookies instanceof Array) {
			    for (c in cookies) {
			      cookie += cookies[c].split(';')[0] + "; "
			    }
			  } else {
			    if (cookies) {
			      cookie = cookies.split(';')[0] + "; ";
			    }
			  }
			  return cookie;
			}
			function handleRedirect(request) {
			  while (request.status == 301 || request.status == 302) {
			    cookie = getcookie(request.headers, cookie);
			    request = y.rest(request.headers.location).accept("text/html");
			    if (cookie != "") {
			      request = request.header("Cookie", cookie);
			    }
			    request = request.get();
			  }
			  return request;
			}

			var output = {"method" : "GET"};
			var key;
			var inner_key;
			var remoteRequest = y.rest(url);
			remoteRequest.followRedirects(false);
			var original_parameters = parameters;
			if(parameters) {
				try {
					eval("parameters="+parameters);
				}
				catch(err){
					output.error = "Unable to evaluate parameters.  Please ensure that parameters is a properly formed JSON object.  Following string was provided: \n\n" + original_parameters;
					parameters = false;
				}
				if(parameters) {
					for(key in parameters) {
						switch(key) {
							case "headers":
								for(inner_key in parameters.headers) {
									remoteRequest.header(parameters.headers[inner_key][0], parameters.headers[inner_key][1]);
								}
								break;

							case "method":
								switch(parameters.method) {
									case "POST":
										if(!parameters.postbody) {
											output.error = "POST method specified without postbody.";
										}
										else {
											output.method = "POST";
										}
										break;

									default:
										output.method = "GET";
										break;
								}
								break;
						}
					}
				}
			}
			else {
				parameters = {"postbody" : false}
			}
			if (output.error) {
				response.object = {"error": output.error};
			}
			else {
				switch(output.method) {
					case "POST":
						output.response = remoteRequest.contentType("application/x-www-form-urlencoded").post(parameters.postbody);
						break;

					default:
						output.response = remoteRequest.get();
						break;
				}

				response.object = {"method" : output.method, "url": url, "request_headers" : remoteRequest.headers, "post_body" : parameters.postbody, "status" : output.response.status, "response_headers": output.response.headers, "html" : output.response.response};
			}
		]]></execute>
	</select>
</bindings>

</table>