I'm not sure that repasting would add anything to be honest, the quality of the thermal sheet looks pretty good, see what you think ?. Maybe tightening up a bit & certainly replacing the pushpins with bolts will help. Your an expert at that from your Abit P35 days

remember seeing your fix there
That new
bios did nothing for me. I'm on 8x520@3.33D 7,7,7,12 atm trying to work up the multis. flashed to new
bios & it wouldn't
post with same settings. Might mean thta it's just a bit tighter timings, but i'll leave it for now.