Humidor woes with stabilization

[LeoM]

Hi guys,

I'm new to these forums (actually just stumbled across them today...glad I did )

I'm hoping some of you could offer a little insight/advice.

I've slowly accumulated 4 300 count humis over the years and needed to finally pull the trigger and go big. So I purchased a cabinet style humi from CI about a month ago (Tower of Power-ish). The issue is, that no matter what I do I can't get the RH to even out throughout the humi.

For Humidification, a Hydra LG (suppposedly for up to 16 cub. ft.) with the additional fan kit and 3 small fans. It is positioned at the bottom of the humi.
Humidity stays at a constant 72% according to the hydrometer on the device, my digital (that is located at the top of the humi) reads 64.2%. I have calibrated the hydrometer on the Hydra.

I've tried moving the fans around (really don't think they do much) and this doesn't help. I added a variable speed fan to the top of the humi and have it running now, but that just seems to have made things worse. Now the bottom RH is ok, but the top is around 58%. The idea was to circulate the air from top to bottom to equalize (not seeming like such a great idea now).

So I'm a little stuck now. I'm thinking of adding beads to the humidor (probably should anyway for added stability) and/or replacing the Hydra with the Moistenair. I went to buy the Moistenair first but they were out of them and I "needed" something right then, so I got the Hydra (which I'm starting to hate).

I know this is a long post, thanks for reading and any assistance you can offer.