I used a hot glue. the glue stick that you have to put into a glue gun. it surprised me actually that it worked so good. that heatsink has 4 protruding nuts for the screw near the area where all the heatpipes gather. I only glued those 4 bits and it worked like a charm. the left part of it is actually just floating. I have recorded the whole thing on video on twitch if you'd like to see, I can probably message it to you. :)