I looked at the damper and saw it change position so I know it is free and capable of moving. I'm going back on it this morning. I've been thinking about the climate controlled drawer. It has its own control board, fan, thermister, and damper. Even though it is supposed to be sealed from the rest of the compartment, if it is continually letting in cold air maybe thats enough to keep the main area too cold. I'll let you know.