Just a heads up on this mod. Personally I went the liquid metal route from day 1. Not sure if the same problem could pop up with 2 resisters stacked, but what I found was that due to the increased heat over the resistor, the solder would actually get hot enough to melt. After about a year, the resistor had fallen off the board on one card. This actually was a huge problem because I didn't realize what had happened. My computer shut off, and wouldn't come back on. Bought a new motherboard because I was getting mobo error codes. Didn't work. Then I noticed the resistor had come off. So I resoldered it, and my computer still wouldn't turn on. Fortunately I had a second computer at that time so I was able to test that the video card was working properly now that the resistor had been reinstalled. However, in the process, it had burned my CPU. No idea how. But just a recap:
- Did liquid metal resistor mod
- Got so hot the resistor actually fell off the board after a year
- Killed CPU
- Resoldered resistor
- All working fine now
So if you get a scare and something happens, your video card may not necessarily be dead. Check your mod. On my second video card, the resistor had shifted, but not fallen off yet. It can be very hard to solder the resistor back on the board. On one of my cards, I had to run 30 awg wire from other contact points on the board that were connected to each end of the original resistor location, and attached those wires to a new resistor.
I think I ended up using a healthier dose of solder this time around, along with supporting it with 100 degrees celsius rated glue sticks, which I could take off in the future if needed.
So based on that experience, my recommendation would be to not stack the 2 resistors on top of each other, but to run a wire from the original resistor to the new one, mounted a bit farther away.