Hey all needin some help concerning GTL settings for my setup.

Current settings are as follows:

FSB=498
CPU SKEW=DELAY 200
NB SKEW= DELAY 100
DRAM FREQ= 1196
MEM OC CHARGER= ENABLE
AI CLOCK TWISTER= STRONGER
PL=8

(VOLTAGE SETTINGS WITHIN BIOS)
CPU VOLTAGE 1.6
CPU PLL= 1.59275
FSB TERM V= 1.55050
DRAM V= 2.21
NB V= 1.60350
SB 1.5= 1.5
SB 1.1= 1.1

GTL 0= -45
GTL 1= +20
GTL 2= -45
GTL 3= +20
NB GTL= -25

Please advise of any changes to GTL's that need to be done, and how do i figure out if it needs to be + or -??