As long as it burns fine and you are not growing any mold, I don't see any problem with a higher RH. It might burn slower, but, that is fine. Just lets you enjoy the cigar longer. And as long as it does not burn unevenly, it should be fine. My humidor stays at a constant 70% and I have no problems with that. My coolidor has stayed on average at a steady 67%. My cigars in there are not dried out at all either. It was up at 70% when I first set it up. I have put a few more boxes in it recently, so, I am sure that it will take a while to bring the boxes to 70%.