I had a hard time keeping the humidity down in my humador. It would go up to 78 to 80. Recently I read that some humidifiers have a sliding adjustable front to control the amount exposed so I decided to try putting some clear tape over part of the humidifier. Worked great. Now my humidity is steady at 72. I would like it closer to 70 but that will come.

I was also reading in CA's new book "The Cigar Companion" (great book btw) that they recommend temp and humidity to both be 70. If you are keeping the humidor in a garage and the temp is in the 80's I think that may also be a large part of your problem. I would bring it inside where it can be kept closer to 70 degrees