cant post pics just yet as my cam is sh*t and i aint got hold of my m8s yet, been doing long shifts at work, i do however now have a multimeter!!I'll second that. Pictures of the soldering are necessary in order to find out the exact reason why you're this problem.
ive never used a mulit b4, but ive fiddled with it abit.
now ive tested the jtag qsb
first of all the bridge - i get no current when switch is in middle, but i do when the switch is at the end (0.11)
testing the red and yellow wire - i get a current from the pads to the pins in white connector (0.11 on both) - but when i connect wires and test from pads to end of wire i get a quick reading then nothing