I wouldn't put 1.5v through the processor. You should be able to hit 3.8-3.9 with 1.37 or LESS. NB and FSB look good. CPU reference voltage for my board adds 300ma to the vCore - I have mine disabled because instead of 1.3vCore it would add that and make it 1.6vCore - WAY too much.I have only gone over 1.4vCore when at 3.95 trying to force the board to 500+FSB. I haven't read too much of the other posts but make sure you have watchdog disabled as well as any other "Features" of the motherboard. Enhanced power slope should be enabled though.
Nobody can actually exactly explain those ... glad someone finally does!