Working my way through my first reweld. The stub pieces have little nicks and dings that looks like they were there before the receiver was blued. They have color in them. I am trying to get my welds as slick as possible and have gone back over all the porosity and voids and continue to mill and file them down. Would you leave the dings that seemed to be there from birth or slick up the whole thing? Don't know about anyone else but it is a tedious process depositing material, avoiding undercut and getting a nice smooth surface after welding.