Thanks for the feedback so far, I am still holding out for a laredo 320 TG or 303 owner to chime in but it seems like I may have located the drain. My cold water heater also drains to the street and really too close to my Propane gas parts for the cold water heater
http://www.keystonerv.org/forums/ima...lies/smile.gif .
I too understand that opening the fawcet s will help but my grey tank is empty and I would like to keep it that way. albeit with a little Anti freeze from the winterization process.