Bios modding help

[Eversor]

Hi!
Would someone that understands about bios modding do me the favor of simply adding values for durons 1.4/1.5/1.6.
I need it because my duron 1200, and other people also, won´t work higher than 1350MHz stable.
And it´s not a cooling or vcore problem, at 1333 rock solid @1.66v, 1380mhz not even with 2.05v. It´s just a bios problem, because with other boards there are people getting 1466 and higher, with this same duron AHLCA. But i like this board too much to change it. :))
I´d be very greatful if someone could help.
Thx in advance.