I was cutting a pallet and hit a nail, which caused the chain to jump off the bar (I'll be more careful in the future). Maybe the chain was too loose. Don't know. But anyway when sharpening it, I noticed 3 damaged links (all of them just behind 3 consecutive cutters), the issue is that they no longer pivot like they are pinched. I put the chain in a vice, added some lubricating oil to the problem joint, and worked it by tapping up and down with a hammer - the links do move when you force it, but they are real tight, and working them back and forth like that did not seem to help. Is this chain worthless or is there some way to fix?
Attached is a picture of the problem chain
Attached is a picture of the problem chain