This is an issue that isn't visible in a normal playing position, will likely never progress, and not influence game play. In many games this part of the play field is painted and this type of issue would be unnoticeable. But it is your NIB game and it bothers you. I respect that and it would bother me too. Now that you've started a new thread and rallied up the troops you have lots of opinions but your problem is still there.
Here is what I recommend: Write to your distributor with pictures of the problem. Also tell him what would be acceptable solution to YOU. What would be acceptable pinside users is of little relevance. Maybe you would be happy with some money back?, maybe a Stern T-shirt or trans light, a new unpopulated playfield? a playfield swap? Maybe multiple options would be acceptable. My guess is if you ask nicely and ask for something reasonable you'll get it. I have had problems with multiple NIB games (Stern, Spooky, and JJP) from multiple distributors and this approach has always worked. If it doesn't work get back to us - in that case my guess is either you or your distributor are being unreasonable and then maybe the community can help straighten things out.