Hi Simon, What are you doing up at this ungodly hour? Haven't you got anything better to do?
I haven't given up on this yet. BTW, I don't see any reason for the FW to be different with the two bodies. After all, the AA filter should have no effect on the image processing unless there is a colour cast of some sort.
I'm "computer literate" and an experienced photographer. I'll follow this until a clear endpoint - hopefully a solution that is guaranteed to work repeatably.