So I have avoided asking humidity questions by searching reading my butt off but I can't seem to find an answer to this question. My bottom shelf reads 68%, middle is 66% and top is 65% (all calibrated), the cigar oasis reads 73%. I will be recalibrating it here shortly. So how much variance is ok between the top and bottom? I don't have any CCs nor anyway to get any so that's not an issue. Humidor is still empty at this point and moving my 20 sticks into it isn't going to help much if at all. Am I at a point I need to add a fan?