I purchased an Intel i7 3770k for my setup. I was using the stock Intel CPU cooler until my Hyper 212 Evo arrived. Now it has arrived, and I was wondering what I need to do to switch coolers? Will the stock fan just come off, or do I need to worry about the thermal grease sticking? Also, should I wipe away the old thermal paste before applying Cooler Master's? And if so, how should I do it?