What to do about different moisture loss in eggs?

[HappyClucker7]

That's great that they're all developing! I would not go any higher with the humidity, you could try going a bit lower for four or five days though and see if maybe that would even them out more. But I'd really not stress over the weights. As long as they look healthy and have good sized air cells I'd just leave them be. From the outlines in your pics, the air cells look great. What day are they on now?

As far as I could see when I candled them, they seemed to be developing fine. I compared them to pictures of other eggs at day 12 and they look the same.
This afternoon marked day 13, so I guess they are on day 14 now. Tomorrow afternoon is 2 weeks exactly.