Micheal,
I agree with you 100%. Even if this problem of "bleeding" through to the emulsion is heat induced it's not the problem of the carrier(transportation), vender/retailer or the consumer. It's Kodaks problem since there was no problem before the backing paper/dye change. I hate it when companies don't fess-up and admit we screwed up. What they should say is, "We are aware of the problem and are diligently working to correct it and will not rest until the problem is solved. Please bare with us!" There, now was that so hard to say Kodak?
I had this same problem with Chinese Shanghai GP3 120 film and do know that it is made and handled in extremely hot and humid conditions. When my Uncle Sam sent me on an all expense paid year long vacation to Vietnam I had a friend there that bought a Yashicamat through the PX. He shot exclusively Kodak film and never once had this , so called, bleeding problem. Vietnam was one of the hottest, wettest, highest humidity places I have ever been in my life. Also, the film would come from tiny little PX's that had "NO" cool storage for film at all. So that tells me that there was a change in something during manufacture and maybe they better change back to the old dye/backing paper. Oh, I don't necessarily love Kodak as a company, but I do love TMY2.