i need 10 more fsb on my P5W DH

OK i am soooo freakin close to 4 ghz but im topin out at 435FSB with good chipset cooling... it never gets over 105*F as reported by a thermal probe on the bottom of the hs.... n e ways is there n e hidden settings in the bios that will allow me to get that 10more fsb to hit 4ghz with my E6600 with out haveing to do a pencil mod? although it seems as though most are topping out right at 430ish.... so its probably gonna be pencil mod time.

N e ways thnx....