Water leaks are a big deal! A 2012 unit probably has been at the dealer for a time. The water you see coming down on the couch is probably only one place the water has penetrated. In my case, a water leak at the bathroom sky light, replaced a month after I took delivery, turned into a complete replacement of both sides and roof at the factory a little less than two years later.
Be persistent, take photos of everything, and keep a journal of events. I ended up with a very positive experience with Forest River, but I am not certain it would have turned out that way if I had not documented everything along the way.