If you have the issue where one of your vRMs is not working. Loosen slightly all the screws of the Heat Sink.
I had one not working and sure enough after releasing some preassure on the screws all them started working.
Looks like factory is over tightning the screws.
Edit: Spoke to soon. Came back. Have One VRM 0V.
It is recommended to check the thermal paste on the heat sink! Although it should be non-conductive, tightening or loosening the screws on the heat sink may squeeze out the thermal paste, indirectly leading to poor heat dissipation due to insufficient contact area.
The thermal paste used by the official LV08 is red. I didn't study whether it is really non-conductive, but in the end I chose to replace it with one I trust.