concider yourself lucky.
i wish my voltage read higher then what i set it at

most P4Bs run lower then what its set at.
right now im thinking 2 things....
1) more power is needed.
2) the motherboards just plain cant distribute this kind of power correctly. (i dont mean just the P4B - i mean all P4 motherboards)
just about every P4 overclocker/overvolter there is has flux in their voltages under heavy load.
if those fluctuations werent there, wed all be overclocking alot higher.
my vcore is set at 1.775v - i get 1.74v - under load its 1.66v.
obviously something is very very wrong here.