Um, why are you worrying about a neutral? Unless they trashed your stars it will make no difference.

An agreement to revise feedback would, imo, constitute them looking at it. Whether they decide to AMEND it would be up to them. You have in all likelihood been took.

I admit I'm guessing, because I sell for money, not feedback. There is no way in the world I would offer or give a partial refund for something that didn't affect the utility of the item. Eg a cracked case would not affect the playing of the CD/DVD and as such would not warrant a refund.

Mind you, the items I sell will stop bullets, and I over pack them, so I don't anticipate issues like this.

You have 100% feedback, for over 1000 transactions in the last year, with 4 neutrals and NO negatives. You are obviously doing the right thing by your buyers and shouldn't stress.