Humidity question

[GaryG]

Hi,

I've got a 100 stick capacity humidor which is about 75 percent full. I bought the best humidification device and guage I could afford. It's been up and running since Christmas and has held a constant humidity level between 67 and 68%. For some reason this week it's dropped down to 65% even after I recharged the device. My question is will this become a problem or should I leave it alone? The cigars seem most enough but I'm afraid it will get worse.

Any helpfull comment will be appreciated.