If it's a tiny surface mounted resistor it maybe cheaper and easier to add a small 1/4 watt in parallel with it to reduce it's value or in series to increase it.
Or you can try the ChipQuik® Surface Mount Device Removal Kit
http://www.chipquikinc.com/
$150.00 REwork Kit
http://www.chipquikinc.com/graphics/store/smd6000.jpg
$17.00 SMD Removal Kit
http://www.chipquikinc.com/graphics/...smd1nl_lrg.gif
They're probably cheaper from other distributers than directly from the manufacturer.
Although I'm able to hit 3.4 with my DS3 and E6300 I think it could go higher. I'm able to overclock my Wintec DDR2-800 up to 1140 with a 1:2 ratio if I run the cpu at 266. Right now 970 is a high as I can go before it freezes. I'm not sure what chips Wintec uses though.
Does Gigabyte owe me anything? No, not really. But this will end up hurting their future sales and reputation. Looks like we will be seeing a new revised version of the GA-9xx-xxx series soon I'm sure.