Check your gray tank and black tank, if you have had your electric dump valves repaired.
We had problems with our electric dump valves a few years ago, after having them worked on several times, and still didn't work well, we had them taken out and had manual valves installed.
The repair place cracked both our gray tank and black tank and didn't tell us. They used calking on both of them. This held for a couple of years and then they started leaking.
My husband removed both tanks and took them to a plastic welder and they fixed both tanks. Cost $45 for the gray tank and $100 for the black tank for the repair. The plastic welding will hopefully work better than a patch.
