I was watching this guy's video and was wondering if I should spread the paste or let the CPU do the job? I know that you should at least cover the center of the CPU since that is where most of the heat is generated. But what about the edges? The die seems like it would heat the edges as well. When you just sit the cooler on top of the CPU it only spreads it out the paste circularly and doesn't cover all the edges. So, what are the pros and cons of spreading it with an object vs. using the cooler?