Thanks, Matt. That's the second time someone has used the term "sticker" in this thread. What's that mean? I bought a dehumidifier this week and have had it running for a few days. The relative humidity went quickly from 65% to 50% -- which is what I set the dehumidifier at. There was a slight improvement in the cupping -- but I bet it will take time for the wood to give up it's water. The ceiling below the wood floor is drywalled and painted, so I'm guessing it may take quite a bit of time for this to resolve. At this point, I'm planning on taking the floor up and reinstalling with new expansion gaps. I think the humidity will always be on the higher side, but I'm feeling like it's mostly relative to the humidity that exists when the wood is acclimated and installed. Thanks again.