That's what I was thinking, How is the dust getting in there. That means if dust can get in, so will water if your traveling and the roads are wet. Looks like some investigation is in order to find the source of the leakage.
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2011 Chevy Silverado 3500HD Ext Cab LT DRW Duramax/Allison pulling a 2012 SOB (still Thor, but not a Keystone), Dual ACs, 4 Door Fridge, Fireplace, Sleep Number Bed, Level-Up Auto Levelers, Disc Brakes, Winegard DirecTV SlimLine Auto Dish, Onan 5.5K, Splendide Combo Washer/Dryer, GY G114s on HiSpec 17.5 wheels, TrailAir Tri-Glide Pin Box, Mor/ryde IS.
Michelle & Ann Sullivan and 4 American Shorthairs
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