I was pondering a similar point. Reduced amp TIG welding may be the answer to just welding the roll marks. What's the perpose of copper? Colt has promoted these Reissues to collectors that are gullible enough to fork out in excess of $2K for what's designed to be a collectible https://reallivesocial.com/story4015925/the-smart-trick-of-colt-combat-elite-commander-45-acp-that-no-one-is-discussing