is there a possibility that one bottle was contaminated? I was of the impression that the sudden death syndrome was fixed when kodak went to non paper packaging for part A. Somehow it doesn't make sense to me that you mixed up the whole bag and then divided it into 5 parts and one of the parts died but the rest did not. Or did you divide the powders first into five parts and then mix? I am pretty sure you wouldn't do that.
I mixed the entire 5L in a bucket at once, then portioned it into the 5 bottles, all of which had been used for developer at least 2 times previously and never for anything else. I can't for the life of me figure out how one would get contaminated, unless it was a matter of an imperfect seal on the bottle itself.
The resulting negatives were almost completely clear, with only the brightest highlights (zone VIII and up) being visible.