GTX 770 Winforce 4gb Overclocking Help!

[vonamloc]

[h=2]This is what I got so far.[/h]

1350mhz for core clock

and around 7.75ghz for the memory clock

with 1.212 volts

and i get around 58C which honestly leads me to believe i could push the voltage farther.

Now for some reason right now the voltage wont go above 1.1 volts which im still trying to figure out. Anyways im looking for help on fully unlocking the voltage to around 1.3 volts. I already have a custom bios on it from skyn3t which is suppose to boost it to 1.212 volts which it did but im looking to push it more since my temps dont go above 58C on the unigine valley 4.0 benchmark and i get around 42 fps avg from the oc above. Im wondering if anyone has the knowledge to share on making a custom bios to fully unlock the voltage cause i feel like the power limiter screwed up my voltages. The software im using is msi afterbuner as the gigabyte software is shit. I have tryed the softmod 1.3v and no luck and both mods for afterburner to edit the voltage and no luck i would just get invalids when trying to identify the card. If anyone has any other ideas on how i could push the voltage please help me out its driving me nuts because i feel this card has so much more potential then what nividia has set.