Have you done the salt test on your hygrometer yet? If not you really need to. If you can't, then BUY A DIGITAL ONE.
If you're keeping your humidity at 70% it's too high anyway. The cigars will smoke much better at around 65%.
I keep the cigars I'm storing long term at around 70% and move them to a humi with the rh at between 60%-65% for at least a week before smoking. I used to keep everything at 70% but found a higher number of cigars would have burn issues at that rh.