This is super disappointing. I have a EXT170 on order and am now worried about this. IM is VERY clear that when you order the tank... that's it. No cancelations, no take-backs so I'm stuck rolling the dice.
I've been following your thread here and I think on the IM Group on FB. I never understood why the vinyl was on the sides like that anyway. Sorry this has happened to you. Be persistent - perhaps they'll come through.
This is a very poor reflection on Innovative Marine quality and completely unacceptable, but at the end of the day, don't let this ruin your absolutely stunning and impeccable build.
(1st post - lol - my wife is the active one on these forums)