As an aside, I have been waiting for a new batch of Arches Platine from the manufacturer since September. The date is now pushed to the end of March. They are tight lipped about the delay, it could be that more cost effective papers are being made ahead of the Platine, but I have ordered quite a few sheets and will have one sheet shipped ahead of the others to test. Knocking on wood, I've never had problems with spots unless I have printed on the wrong (back) side of the platine paper.