So I've been working diligently on my new B&W. It's not my first B&W and not my first B&W overclock. The issue I'm running into is that all the tricks I used before to get the old one to 400mhz stable are just not working with this board. I've tried babying the jumper settings from 300 to 350 with no success. All I get is a startup without the ROM tone. Don't even need a monitor hooked up to tell it failed.

Luckily it still boots at 300mhz. My question is for those that have OC'd B&W's before. Did you run into any issues like this and how did you work around them?
MacBook 2GHz Intel Core 2 Duo w/ 2GB DDR2 RAM & 120GB SATA 5400RPM HDD
Canon Rebel XTI
Google Cr-48 Beta Laptop