I just picked up my brand new PPQ .45 from Bud's and noticed it's got some blemishes on the ejection port. If the tenifer isn't compromised and it's just cosmetic, then no worries on my part. I am curious as to the cause however. I'm talking about the area to the right of the N and extending further right underneath the F in the attached pic. Brass from ejected casings maybe? That would seem odd to me for a brand new gun with only a few test rounds at the factory. Hoppes #9 did not do the trick in my first attempt at seeing if I could remove it. Any thoughts?