I have just bought this scanner, based on the almost universally good reviews it has received. So far it has completely lived up to expectations except for one factor. The paper feed mechanism leaves two slight parallel vertical creases in the original document being scanned. These do not appear in the scanned PDF, and mostly it doesn't matter at all because the original will be thrown away (even an advantage because it is easy to see if a piece of paper has been scanned) but occasionally I might want to preserve the original in an unmarked state.....or it might matter scanning someone else's documents, or photos. Any other owners see this or have I got a faulty one?