Memory tweak necessary question

Using beginners luck, I have overclocked my Intel Core Duo e6600 to where it is running stable @ 3.51 GHz (9 X 390.1). Most settings were left on Auto however I was a little concerned about the 1.456v Core Voltage. The manual says 0.85 to 2.1v, and I have read of others using this value in the same situation so I left it alone. I manually set the CPU PLL voltage to 1.50v. My idle temp is 30 degrees C and my Core temps never go over 50C when running flight simulator.
My question is: I have not done anything to the memory because I don’t know much about it and don’t understand what I do know. Should I do anything the tweak my memory? It seems to be running pretty well like it is.
Here are my settings:

DRAM Frequency 390.0 MHz
FSB:DRAM 1:1
CAS # latency 5.0 clocks
RAS# to CAS# Delay 5 clocks
RAS# Precharge 5 clocks
Cycle Time 15 clocks
Command Rate 2T

My Rig:
Intel e6600 Core 2 Duo @ 3.50GHz
Noctua NH-U12P Cooler
ASUS P5Q Pro
OCZ Reaper 2X2GB DDR2 800 (PC 6400)
EVGA GeForce 8800GTS 640 MB (O’Clocked)
WD 250GB GB SATA II
Corsair CMPSU 550W
Windows XP home

You could probably do one of two things either tighten the timings to say 4-4-4-12 or increase the divider to ramp up the speed a bit those modules will handle more than they are rated for, you may even beable to do both ;)

Thanks, I will try that.