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Go over to the Montana face book page they seem to have more failures than here. Our failures were caused by poor tank design and improper installation. I am surprised that more have not been reported here. Anyhow we have another new black tank that is tank # 5 on this 3402 and black tank # 2.This one was my fault as I filled it to capacity for a good after Florida flush. Split at the top as usual.
We would keep our gray and galley tank closed when on site and when the water backed up into the sink or tub knew it was time to dump. We do not do that anymore after two gray and two galley tank failures. Many here do that and wait for that gross burp at the black tank before a dump. We never did that. Try doing a tank check. Fill them till they back up into the sink or tub and the black tank is right up to the top. They are holding tanks so they will hold....Not to worry.
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