Clyde n deb,
I'm not sure what is going on with your black tank.
Do you empty the kitchen and grey tank after you dump the black? What we do is dump the black tank then the galley tank and the grey water after that. It does help to flush the black tank. After that is completed I close the sewer valve and hook up the flush hose, I will fill the black tank a 1/2 to 3/4 full and then pull the handle and dump. I do this two or three times, then I leave the sewer valve open while running the flush hose until we get clear water comming out. We use a transparent connector where the sewer hose connects so we can make sure the water comming out is clear.
It does sound like you have another problem though, it sounds to me that your black tank is not set level. I would certainly get it back to your dealer to check out. Your rig is new so you need to get this taken care of before the warranty runs out.
Maybe someone else will be a long soon for some more remedies.
Bill
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