The scratch is such a common problem, experienced by many (an oops moment) but mostly by people new to 1911s. Spend a little time on the 1911 Forum and learn how many people have experienced or want to avoid the problem. Newbies, like I was, learn the correct way to reassemble and pick up a few easy tips (credit card, tape, etc.) to avoid the scratch.
The reassembly scratch is easier to accept than other scratches and dings because it doesn't indicate misuse. I just wouldn't want one on a high-end pistol unless I put it there.