I just assembled a new pc for work. Before I installed the cooler I tested the fan with my fingers and noticed that it was so very close to the heatsink that it slightly brushed against it. I don't have much experience with stock coolers so I installed it nonetheless. The fan works, but it makes a 'zrrrr' noise. The noise is faint(ish) but annoying. Is there a simple way I can correct this inconvenience or should I just take the cooler back and have it replaced?