I am printing on Canson Platine Fibre Rag on an Epson 4900 printer. I did a print today and got a pattern of head strikes in the middle of the print. The Canson web site says to use a paper setting of Premium Luster Photo Paper 260, however, it seems to me that Epson Premium Luster Photo Paper is thinner than the Platine Fibre Rag. Has anyone had this problem and come up with a setting that prevents the head strike?