any a7v266 voltage mods yet?

I think this is what is keeping me from reaching a stable 1.6 on my 1.4 so i would realy like to know. I'm very good with the soldering iron

Probably the easiest mod wound be to pull the Feedback pin on the voltage regulator chip down with a resistor, like with the other voltage mods.

Which pin and what value would depend on the voltage regulator chip used.

I would check the datasheets for the particular chip used in your particular motherboard. (I don't know the A7V266, so I can't tell you which, sorry )