The only part of the M2 drive that needs cooling is the controller, not the nand chips. If you cover the whole drive with the thermal pad of the heatsink, it will cool the controller well, but not the nand. Bare exposed nand cools better than with thermal pad + heatsink. So best to only apply the pad to the controller and remove the excess that would otherwise cover the nand.
yah before he jack of stargate he was macgyver, not to be confused the remake series which bad comparisons, but watch able