pic/info of the mods below

from mouse
for gpu#2 you have a solder pad point on the backside as stated in the guide at XS

for gpu#1 solder directly to pin#9 of the ic controller

jason said to use a mag headset and a needle point sodler iron tip and once the wire is soldered to cover with hotglue and or AA epoxy as the area is so small/tight you dont want the wire to come loose and or break off

Ill try take pics of the cards when I install EK blocks when they come in stock.

The cards with fans at 100% have no problem at 860/960 inside the case with vgpu on both set at 1.305v load