Newbie here, just purchased my XDM in 9mm and have a question about marks I recently noticed. I have put about 400 rounds through her, mostly hardball. I noticed the marks at the top of the barrel and the scratch at the ejector port. The top marks don't bother me so much, but the line at the ejection port stands out like a sore thumb to me. I hoped the finish on this gun would have been tougher. Anybody else have these??