Dear Jake,
There is a skill to reinstall the M.2 heatsink on an MSI Godlike x570 with the monoblock. There is a groove under the armor of the monoblock. The M.2 heatsink has to reach the groove by one side and then press the other side to the motherboard. You can see the video here.
Any questions, feel free to contact us.
https://www.facebook.com/100005471287105/videos/pcb.1736079443251082/836641983894960