I have been using Entrada Bright 190, 5x7 for test prints and 11x17 for bigger prints. Currently the big ones are printing more yellow. This is image color not paper color, and it's a subtle difference - just enough to make me think I could be losing my mind, until I figured out what was happening. I've tried all the variables I can think including degree of enlargement. The prints on the 5x7 paper are consistent with each other (from this one box, at least), as are the ones on 11x17.
Is this a one time fluke? Or should I not expect these papers to match?

Printer: Epson R2880

Dave, are you seeing a visual difference between the sheets? Would you mind sending us some samples for us to review and figure out what you are seeing? We would love to get a solid answer for you. My email address is andy@legionpaper.com.