From what I can see (it is a bit pixelated) I think you've done a great job repairing the missing pieces. I can't tell that the sections were cloned (no obvious patterns or other giveaways).
To me it looks like you need to do a final levels adjustment to fix the contrast. Then I quickly desaturated the image with a hue/sat adjustment layer. Ran NeatImage to clean up the pixels I saw and called it good. Also did a sepia tinted version because some people like it better than B&W.
It could be that there is additional damage you're wanting help on it's just that we can't see it through the pixels. If that's the case you might want to upload a smaller image at a higher quality. Otherwise, I think you've done a beautiful job.
Kerry