You doubt you'll notice any performance differences??? Man that's a lot of cabbage to spend just to have an 'even' room response! But, hey that's your cabbage, if you're happy with the way you spent it, then I'm happy for you. Lets see some pics!
Oh, did you order these through the FO? If so then the slight imperfection would be understandable. However if you ordered them regularly, then by all means don't be shy. $2200 is a lot of money, I would accept nothing less than a perfect subwoofer for that kind of loot!
So when is this big move into the basement?