A few years ago we worked at a campground in Colorado. A guy came in with a brand new Big Country, and he was complaining about the brakes, long story short, he had a mobile tech come to the campground, and the tech stated that the brakes had never been adjusted at the factory. So I guess that sometimes it does happen.
Also to back up Jim's comment, the first time I had the bearings packed on our 2011 Elk Ridge, when I picked it up after being packed, I got chewed out because I pumped too much grease in the bearings. I politely listened to him, then told him that prior to them putting grease in the bearings, the only hands that have done anything to the bearings/wheels, were at the factory. Apparently someone had pumped too much grease in there & blew the seal. Fortunately it wasn't bad enough to require new brake shoes.