Did anyone tinker with the settings yet ?!

I'm looking for a way to under/over clock these A4's (280mh version) to get a better w/mh
at the moment i'm stuck at 3,2 w/mh at the lowest..  (700v - 800mhz)

also, innosilicon used a custom cgminer version for there dominators but did not released the sourcecode.
(But hey, cgminer is released under gpl-v3 !!, gimme the source!)

what i'm looking for are the most optimal settings (A1pll and A1vol)

Cheers.