I got my new cages from repti-racks, and on top of the all the other issues I've had with them, it seems they're not vented nearly enough. I put up a post yesterday asking about the accuracy of Herpstat 4 humidity probes, and was able to verify it as accurate today. So the issue must be that the cage isn't breathing. Without misting, on totally dry mulch, I'm getting 80% humidity with just a water dish in there. If someone could give me some advice on how to alleviate this, I would be most grateful...

Do I just punch some holes in the cages? If so, front or back? Through the plastic, or through the acrylic windows? Or should I just try to cut out the little "blinds" insert in the vent on the back? I'm attaching pictures:


Front of cage



Back of cage



Outside of vent



Inside of vent





Would greatly appreciate any input.