Which 85 Ais are you talking about Richard please ? Discussion was about 1,8/85 AFS/AFD and there's no 1,8/85 Ais, only K-type Ai modified or 2/85 Ais. Perhaps do you mean 1,4/85 Ais ?
Actually I have three 85: 1,8 K Ai modified, 1,4 And and PCE...and like all ! CA is present but rarely troublesome.
I'd like to see comparison between 1,4/Ais, AFD and 1,4 AFS G. If someone can make same picture with different 85's ?
