Recently acquired a PB G4 15" 5,6 and i noticed that it runs hot. As part of the mods that i want to do to this laptop, i was wondering about a cooling mod. Now i already redid the thermal paste and i need to get new thermal pads, would it help if i made some slits just under the fans so that fresh air can be drawn in through the bottom and then out the back? Or would that just screw up the air dynamics? I am going by what i see on regular PC laptops, that they have slits and mesh to prevent dust from coming in, so can this same type of concept be done to a Mac laptop?