I've been pleased with my beads.

Test your hygrometer again (salt test). The way your cigars are burning sounds as if things are too humid, yet your hygrometer says its a bit on the low side.

If your humidor humidity is low, recharge your beads. Use a spritz bottle, eye dropper, or just place a shot glass of distilled water in there.

Flashlight test. Make sure your humidor has a good seal.

Doesn't humid air rise? I think that's right. If so, keep your beads towards the bottom of your humidor.

Temperature. You don't want big swings in the temperature of your humidor.