Recently purchased a AP rack the 1860/1960 sterilite. I started with a few holes, then more & more. They are sitting at 71-85% humidity with the holes. Question is what's the best location for the holes? I have a lot in the front, some on each side & the back. Being enclosed I don't see the sides & back helping all that much in air flow. I have approx 20 holes on each side.

I was thinking of drilling out the holes in front to make them bigger. I've just been using a soldering iron so they are fairly small. I do have a ceiling fan running 24/7 as well. There is no condensation building up so I assume its safe at these levels.