I'd give the scratch a name.
Something like "Scratchy McScratch". Talk to it. Stroke it occasionally (the scratch that is, you perv).
You say it's on the right side of the lid? Make another on the left to keep Scratchy company. I'll leave it up to you to come up with a name for this one. Perhaps it can be Mrs. McScratch? Who knows? Go wild!
try buffing it out ?
But think twice if the instructions start with "Take your surgically-sterile angle-grinder..."
microfiber cloth worked for my allumiunem robot