Regarding paper, I'm using the last of my boxes of Endura dated April 2011 and the paper is going slightly cream in the borders. It's most noticeable when you place the paper next to something pure white. I quite like it, or maybe more accurately, I like it more than I like the wafer thin Fuji paper.

I've found that Kodak chems go bad around two years after purchase, colour developer B seems to be the most sensitive.