Seasoning your humidor refers to wetting it with water. Since water evaporates, I don't think that re-seasoning it is a bad idea if you are unsure it was done proplerly the first time. I probably would. 76% is a little high, and your humidifier is probably at fault, or you may not have given the wood in your humidor enough time to lower the humidity. The cedar is used because it has the ability to absorb and release water thus leveling out the humidity silimar to the humidifier. If I were you, I'd order the 65% beads and not worry about what is wrong with the humidifier.