Answer: Unfortunately we do not have a recommended procedure for cleaning the inside of the trailer. However, I do believe in this situation the aerator itself has come loose and the internal wear pad has rotated inside. We recommend hand-tightening the aerators once a week to help prevent the wear pad from turning. At this point you will need to drop the line, discharge valve and loosen the aerator. Then you need to reach up inside the tank and turn the wear pad to its original location. Finally hand-tighten the aerator, re-install valve and piping. Thanks for the question.