So VEI has ignored you also, that's really uncalled for. VEI might as well just go out of business if they've adopted a policy to ignore customers concerns.
I also have the Petrocelli set, the one with the brown color scheme, but I haven't had a problem with the discs and they all play fine.
I have the set you ordered, the 31 disc set, I've had it for a few years now. The disc I had a problem with was disc 3 of season 4, the episode titled The Prisoner didn't play properly. I contacted VEI about it and they informed me they were aware of the error and they sent me a replacement...