Humidor from Hell

Hey inmates! What's going on? I was wondering if someone could give me some advice or directions on my situation here.

SO, I have a 150 count desktop humidor and it is freakin beautiful. However, the humidity keeps dropping down from 90% (empty and dabbed with distilled water with a cigar oasis humidifier in it) and then dropping to low 60's with about 30 sticks in it after 2 days. What is going on? I am trying to keep my level from 65-70 and I am having no such luck! I am seriously banging my head against the wall here and ripping my hair out. The frustration has reached a boiling point to say the least!

PLEASE HELP ME!!!