I installed a Cooler Master Hyper 212 EVO and the side of my case will close but it touches the end of my cooler. I've been using my computer without the side panel and I was wondering if there were any dangers in doing that besides sticking my hand in there while it's running. I didn't know if humidity or dust could cause problems or not, I have air-conditioning on most of the time and when I'm not using my computer I usually put the side panel back on.