To me it looks like the eggs are sweating out. The area of the eggs where they look wet is moisture escaping the eggs. Causing them to dimple in because they are loosing moisture. Get some liquid band aid and paint that area to keep the moisture in. Most of the moisture on the side of the tubs is coming from the water in the bottom of the incubator. I placed a tub of water in the bottom of the incubator last year to keep the humidity up. Moisture started forming on the side of the tubs and side of the incubator so I took the water out of the incubator. The moisture went away and the eggs hatched with no problems. The eggs might have hatched with the water tub in there but I didn't want to chance it.
Trey