I would try backing off the multipler a bit. Try 10.5 or even 10.
In my situation, i was able to get the FSB speed to 200 no problem, but when i increased the multiplier my temps started to go up(53-56). My signature shows a 200*10 overclock, but i'm now running it at 200*10.5. My temps stay at 49-50 degrees no matter what i do, so i'm satasfied with that.
To me, the FSB speed is the most important in an overclock. You're getting a 20% increase there. CPU clock speed is great, but the FSB is the bottleneck. With a 200 MHz FSB speed you're getting the full bandwith of your RAM. That alone should show a noticable increase in your system's performance.
Lian Li Aluminum Case
Intel D975XBXK2R Mobo
Core 2 Duo E6700 CPU
EVGA 8800 GTS Video Card
Corsair XMS 2 x 1gig RAM
Zalman 9500 CPU cooler