WOW!!! I've been here for almost 6 years now and have yet to come across half of the issues you seem to be having. Like mom always says, "It's not what you ask for, but how you ask for it" The hatch opening for 70' to 78' is the same. If you were to take that piece you just got, and try it on a 74' you'd find that you still have the exact same issue. If the part is bad, SEND IT BACK!!!. MSA is usually pretty good at returning and swapping bad stock for good. But you have to actually ask. No offence, but bitching never really gets you anywhere. Go to the classifieds, ask for a used but in good condition seal, that you can use particular areas of, to rebuild yours. The classifieds get looked at ALL DAY LONG. And you don't have to worry about the WTB or Request of parts, slipping off the front page, like most threads do. When you mention us as a "CLUB" you basically are blaming all of us for your being picky on the needed parts, and for the parts that YOU purchased, from an Entity that is not a member but a contributor to the site. Think before you speak, saves you a lot of time, when reading posts like mine. Ya think? FWIW, Dave