Is this an open gun or a standard 2011? l suggest that you file the ejector little by little until it will completely eject the bullet (this depends on the bullet you want to use). Then fire the gun around 1K rounds before you do anything else.
Make sure the magazine with one bullet left will eject properly. It's because during the course of fire, the remaining bullet will go forward a little bit, so when you eject the magazine, the bullet nose or magazine follower will touch the ramp of the barrel. If this happens and your magazine get's stuck, start filing the protruding barrel ramp little by little until the magazine can be released without any issues.
About the scratches, start finalizing until the gun will no longer have a problem. You may use a regular metal polish or buff polish by Brownell's.
Hope this helps. Good luck.