Originally Posted by RedHorse1
Sounds like the valve leaks. Could be debris preventing a good seal or a defective valve. Do you flush the tank after dumping? If you are in warranty a visit to the dealer might be in order. I Keep a box oh disposable gloves for setting up the sewer and dumping.
Just what I was thinking.
If you have time at a dump station I would have the sewer gate partially open, maybe half way. Go into the TT, with a full 5 gallon bucket of water, and dump it down the toilet as fast as you can. Might repeat that a couple of times and do it at least once with the sewer gate wide open. If there is debris caught in the valve, it should help knock it free.
Also after dumping put about 5 gallons of water in both tanks for the drive home. Add a cup of liquid fabric softener, and 1/2 cup of Pinesol down the tanks with that water. Let it slosh around good. The liquid fabric softener, is a water wet, it will break the water tension, so that water can get into the crude better and help loosen it as you drive down the road.