The bees don't fill the cells and then fan the moisture out! And, they don't generally cap cells that aren't full. It's an ongoing process. Most of that uncapped honey will have the right moisture content. If you reach the end of the flow and have uncapped honey left are you going to leave it in the hive? I don't. Might wait a few days to give it some curing time, but it's going into a barrel. Recommend you buy yourself a refractometer so you can test it for moisture.