Couple of things; the word on the street is that your cells should NEVER be more than 0.2V different as this supposedly is the point of
Second, you could always get something like a blinky balancer that can be used before, during and after. In my opinion, one of the first things people should buy is a balancer that will cut off voltage at a certain difference. This is a must for lipo technology and they WILL/HAVE saved many a family's home. I don't know how many times mines have saved me when I was charging some "older" packs that just don't charge evenly.
Third, I've never had a "new" pack (I've prob had owned well over 200 packs) with a voltage diff > 0.02
I would definately return that pack and use those funds for a good balancer (one that would cut off voltage) cause unfortunately, it only takes one charge to ruin everything.