Micro Cooling Fan blade cooling

"Micro Cooling Fan" of the blade rotor radius is only less than half, the middle is no wind motor. Fans pressed against the heat sink, with no space for mixed gas stream, resulting in the middle of the heat sink is not blowing wind. Another problem is that the radiator installed after the fan turn up a lot of noise because the "Micro Cooling Fan" shock passed to a heat sink, and then to the CPU board, worrying will not shock bad fragile CPU ??? We need to refit fans to achieve better cooling effect: find a block of rubber cut two triangular shape, with hot heat sink attached on both sides, "Micro Cooling Fan" hot melt adhesive and then fixed in a triangular rubber sheet above, the inclination of some off-center, so that the wind blowing diagonally to the heat sink.