It appears the problem was the CPU_RESET cable. The original end of the cable is prepped perfectly but it was 2 times too long. When I trimmed the wire to length, I thought it was simply a stranded conductor and cut and stripped the outer jacket.
To correct the problem, I had to strip the outer insulation back, trim the braided shield, strip the inner jacket and solder the exposed inner solid wire to the motherboard. A very tedious task for such small wires. Install doesn't look great but I was able to boot in Xell after 3 glitches and retrieve my keys and LDV.
I am having problems booting the Xebuild image now but I've only made one attempt. I'll retrace my steps and see if I can find my error before posting another help thread.
Posting a pic for anyone else who may run into the same issue. Thanks for all the help.
