Les Sarile
Member
I would test it out to see what the new speed is by conducting controlled exposure like I did with this Kodak Ektar 125 which shows expired 4/1992. Based on this I figured that it is best set at ISO32 so I have latitude on either side for best flexibility.
Link to larger version -> Kodak Ektar 125

Link to larger version -> Kodak Ektar 125