Could you please suggest some tweaks to improve my overclock shown below. I have tested it a little. It seems to be stable (orthos & memtest) and it runs well with games. My goal is to refine this overclock to a efficient and usable status.

By the way, thank you for helping me last year with my RAM selection. I have read the sticky P35 overclocking guide and found it very helpful. I based these settings on that guide and many searches.

GA-EP35-DS3R rev2.1 BIOS 4a
E8400 (C0), ZALMAN CNPS9500 AT
Mushkin XP 4GB (2x2GB) DDR2 PC2-6400 (996580)
EVGA GeForce 8800GT 512MB 650/1620/950, ZALMAN VF900
Antec Earthwatts 500W
two WD Caviar SE16 250GB SATA
Windows XP Home

Robust Graphics Booster auto
CPU Clock Ratio 9
Fine CPU Clock Ratio 0
CPU Frequency (Ghz) 3.618
CPU Host Clock Control enabled
CPU Host Frequency (Mhz) 402
PCI Express Frequency (Mhz) 100
C.I.A.2 (CPU Intelligent Accelerator) disabled
Performance Enhance Standard
System Memory Multiplier (SPD) 2
Memory Frequency (Mhz) 804
DRAM Timing Selectable (SPD) manual

--- Standard Timing Control ---
CAS Latency Time (tCL) 4
DRAM RAS# to CAS# Delay (tRCD) 4
DRAM RAS# Precharge (tRP) 4
Precharge Delay (tRAS) 12

--- Advanced Timing Control ---
ACT to ACT Delay (tRRD) 4
Rank Write to Read Delay (tWTR) 10
Write to Precharge Delay (tRW) 6
Refresh to ACT Delay (tRFC) 52
Read to Precharge Delay (tRTP) 6
Static tRead Value (tRD) 8
Static tRead Phase Adjust auto

System Voltage Control manual
DDR2 OverVoltage Control 0.3
PCI-E OverVoltage Control normal
FSB OverVoltage Control 0.1
(G)MCH OverVoltage Control 0.1
CPU Voltage Control 1.29375
Normal CPU Vcore 1.225

CPU-Z idle core voltage 1.264
Core temp IDLE 37
Core temp LOAD 47
superPI 2M (sec) 31.485