I have the DC farmhouse stripped of the wallpaper and carpet. I've tried to put the interior walls back in place, and now the lower level divider is "too tall" When I put it in place, the entire left side of the house raises off the foundation (because that came unglued as well) What has happened? Could it be that it was like that to begin with, and over the years the glue gave way? I've never seen anything like this before.