I have a question about our new 2020 Montana High Country 373FL. When we run the AC for an extended period, it drips excessively out of the intake vents in the living room. I took the vent covers off, and there is a hollow square duct that is about an inch wide that runs between the two intakes, this is where the water is coming from. Never had it this bad in any of our previous trailers, it is more than a few drops, it is puddling on the floor. Any ideas?