If it's the same bulletin than I remember seeing it's not small drain holes that's the problem. The problem was caused by multiple holes (mounting or something) that should have been sealed when the AC was installed and weren't so that when it rains hard water can back up and flow back thru those unplugged holes. Or it might do that if it's leaning a little.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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