I would not try to "pop up the fan hub" as Photon939 says.  I tried and broke the fan.  You are trying to get lubricant to the shaft. That's the reason for drilling 2-3mm off center.  I beleive at 8mm you are way too far from the shaft and you now risk drilling into the armature of the motor. If you nick an armature wire, motor is done. I showed Tri-Flow but I believe any teflon based aerosol spray will do the trick.  I wasn't worried about the spray being "too energetic"  I want some lubricant getting in there. After running them overnight, hit them with another couple short bursts.  Forget about trying to reinstall the same sticker.  It'll eventually fall off unless you clean off the fan hub nicely and apply new adhesive.