I have a Polaroid 55 neg that has milky patches on it. It is also has many tiny dust (I think) marks that show up at 11X14. I am thinking of re-washing it to try and get rid of the spots. Should I put it back into Sodium Sulphite and see if that clears the milkiness? Are there other precautions I should know about when one re-washes a neg? Many thanks for everyone's help Yaakov Asher Sinclair