Just as an update:
I realized I only had Xenon donor boards. I decided to try them anyway. I resoldered the cap and knocked off the resistor below the PLL_BYPASS so I also had to transplant that. I still could not boot. I removed the coolrunner and flashed the original NAND back. I then had success booting. Whether or not those are necessary components, I am unsure. What I have learned is that a Xenon is a valid donor board. I have decided not to continue with this board at this time. Out of probably about 50 JTAGs and 10 coolrunners now, this is the worst trouble I've had with a board. On the bright side, it compels me to buy a better and more precise Aoyue iron and a perhaps some magnification setup. I appreciate all of the advice and quick responses I was given. At least the xbox is now functional, albeit without exploit.