I'm wondering whether there are any other printers out their experiencing a problem with batches of Sonora T57. The problem we are experiencing is inking up of the background, roller marks in the non image area which dont disappear as the press run progresses. The roller marks are running around the circumfence on one edge. If I rotate the plates in the Suprasetter they will shift to the other edge which eliminates Press and Suprasetter as the cause.