I didn't know I suggested a solution :-) I was just trying to see if I understood the actual problem, and the dynamics which caused it.. which you confirm IS an issue, but not for the specific problem you presented. Thanks for the explanation of oxidized developer scavangers...that would have probably eluded me for a long time.

I had heard that color film actually consisted of a dozen layers or more, but before reading this thread, I never understood why. Now I do, especially with your mention of oxidized developer scavangers in interlayers.