65% Heartfelt beads leave my humidor at 72%

[4theLoveofCedar]

I have been using the 65% heartfelt beads (largest tube, more than enough for my 100-count desktop) for about a year now and only recently bought a digital hygrometer (Caliber IV). The hygrometer salt tested at a perfect 75% after an 8-hour test. I was shocked to find out that my humidor checked in at 72%. What is going on? I don't open my humidor everyday - probably once a week or less. The ambient humidity is high (usually above 75%) but I keep the Heartfelt beads at least halfway solid white so they can absorb excess humidity. I have read that the beads do not absorb humidity as well as they release it. I've also read that cigars release humidity slowly. Could it be that I just need to wait longer for the beads to soak up excess humidity? Is there a better product for high humidity environments like mine?