Phenom 2 965 Easy Overclocker

Well after installing my AMD 965 i have finnaly gotten it clocked to where i want it. its running on a Mass Cool air cooler, and now over clocked from 3.4 to 3.9gig without changing the voltages and at a cool 54cel.
If anyone has any suggestions on getting past 3.9gig let me know. This cpu is by far the easyest to overclock ive ever seen.