[T.G]

While that is a long time, without knowing what more information type of humidification device you are using, if it is properly sized for the humidor, and a few other minor factors like the temprature, how tightly packed the humidor is (airflow restrictions) type of humidor, etc... It's hard to provide any specific advice other than to pick up some blue masking tape and start taping. If that doesn't work, try green, red or pink (in that order).