Intermittently I keep getting a 404 error while adding users to the site stream via the add_user.json endpoint on the control stream. The error message is either a “Not Found” or “control stream delivered to wrong server”. One of the sample endpoints that I get this error on is https://sitestream.twitter.com/2b/site/c/1_7681173743328393329_278fcc6e139bec93145d156f06488674/add_user.json. Reconnecting sometimes fixes the problem. Any help would be greatly appreciated.