My 22' never did this, so I'd never heard about it before. This is why I was concerned and asked the helpful community here.
I agree it sounds bad after paying so much. But I'm relieved to know it's not a sign this brand-new unit is falling apart.
I can also see the pink insulation poking out around all my upper windows, and other tell-tale signs that manufacturing cuts corners. Again, not producing a great feeling in this new owner, but at least it's not letting the rain in...