While installing the screws for HK TR4 cpu block, I was very concerned about breakage. Even if you follow the directions 100%, if 1 our 4 scres somehow managers to break, it will be nearly impossible to fix motherboard. I really think Watercool should use split screw design similar to Enermax. Enermax ships with 8 screws. The bottom screws have a thumb twist head with a screw inset. The second set of screws then twists into this bottom inset. This system produces much less anxiety because x399 motherboards are not cheap.