This makes so much sense now, I did not see them at 11x14 in a complex scene and the 12"x24" prints I made that looked perfect were from 6x12 Pan-F, a dull surface.

I looked again at my Negaflat carrier and it really does not crop as much as I thought and could even be filed out a bit if we're feeling anal about it and it does hold Tmax super flat. Still not a fan of the bite marks, but they are right at the frame edge, so that might be the ticket for Tmax films...