This is my first time at this thread thing. I am not sure what the ground rules are. I am rertired and have trhree Airstreams one of which I need to get rid of. Can I post one for sale here?The trailer that I use is a 31 ft. Int, Soveren, To over come the problem of the sewer being on the rear, and the parks now days having there sewers sited in the middle of the parking spot I raised the trailer 3 inches and ran the sewer line foeward, under the trailer, right up behind the rear tire. Worked very well.