If my memory does not fail me, it was on the November-December issue of 2012.
I am abroad now, but I will check it up when I go back home and I will post separately if I find it.
I just feel a little "let down" if I have bought a watch which is found defective after just 6 months and then AP introduces a modification to sort it out. If so, I would like the modification to be offered to the people who have been buying the watch just before...
I may be too "perfectionist", but then again I believe many of us around here are!