I emailed. I'll call tomorrow. It only leaks when someone uses either the kitchen sink or the hallway sink. I assume they merge into a drain line that leads to the grey tank. The point of the leak is almost direct under the middle of the coach between the stove/fridge area and the grey tank. No water inside, only beneath when those sinks are used and not when shower is used. You can actually see soapy water underneath if someone washes their hands or dishes. I just don't see a way to access that portion of the lines. I've not worried about it too much since it is just a little grey water on the ground, but want to get it repaired before I need to winterize again later this year.
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