I was behind my service panel near the docking station, and noticed that the drain pipe out of the black water tank was elevated. The pipe exiting from the tank about 24" turns a 90 degree elbow goes 6" into a 45 degree elbow. The 45 degree elbow is sitting on top of the I-Beam that has elevated the drain pipe. So when we dump the black water tank it does not empty all the way out. Is this something I can fix or do I have to take it to the Dealership to have checked out?