Rampage III Gene fullcover waterblock?

[MrToad]

try to isolate block surroundings (SMDs, chokes etc.) with tape or smth.

Done. Used ESD safe kapton tape to cover everything in the surrounding area that doesn't get cooled.

check MOBO bending while tightening block screws.

I can see slight pcb warping on the top left corner of the motherboard as soon as I do anything but leave the bolts retaining the mosfet part of the block anything but completely loose.

and what conditions (case or open stand)? maybe bad earthing of system could cause that symptoms...

Both inside the case fully assembled (first few attempts with first motherboard) and "open air" on an ESD safe workstation.

If I have the will to face it during the weekend, which is unlikely really, I might try 0.5 mm thermal tape on the mosfets, starting from the ones adjacent to the NB and then the ones next to the CPU depending on bending/contact...

Thanks for reading and posting the suggestions tho... After so many unsuccessful attempts is not unusual to slip into a "can't see the wood for the trees" state...