I went back to the retail store and although they are sending a rep from the mill, the sales person showed me how the carpet was made and all of the rows of berber were running diagonally. He indicated that most berber carpeting was not made this way, and having many years of instalation experience, indicated that he couldn't imagine how a seam wouldn't be visable because you would be cutting across the rows and cutting the loops. He said this carpeting is meant for one room were there wouldn't be any seams. He recommended that I demand another similar quality carpet with the typical rows of berber, that are not diagonal, even if the rep indicates that it can be perfectly installed. Is he just trying to avoid additional problems due to a poor installer and looking for an easy way out, or can this type of berber be seamed easily by a better installer?