PabloCruise
SILVER Star
another trick you can do if you continue to have the same problem is to follow the drain hoses to their exit point of the vehicle. They will be connected to a 90 degree rubber elbow to the exit hole. Remove the elbow and stick the hose in the exit hole without the elbow. It is a factory flaw. Overtime particles will build up in the elbow. Removing it will allow sufficient flow to be restored.
Does anyone have a picture of where the rear drain tubes exit the body?