Looking forward to that test result!
Thanks for information, i have one lightning coming here and after reading these i wont even think to take hs off before there is one 99% sure solution found :P
I have 5 different thermal pastes here so i can try some of them to see wich is best one. (AS5,Gelid GC1,Zalman STG2,Thermalright CF III,Revoltec Diamond and maybe some AC too)

Too bad i have only slim pots here, lets see how much voltages it would handle. Maybe not enough to get mark11 over 1300Mhz gpu.. :/