Barring having done something stupid--like confusing pot terminals--the VRM installation was much less difficult than I made it out to be initially. Stephen was a huge help, in steering me to the right docs and patiently answering poorly worded emails!
I replaced the Power Switch, and I could not solder the pot to the VRM board and make a good connection to the chassis for the MOSFET, in that location. So, I mounted the VRM board to the chassis, directly under the pot and ran short, twisted wires, from the pot to the VRM board.
Below is a crap photo, taken late last night, on my phone. I will post better photos of my project, when it's finished, and I can confirm that I am not posting photos of bad implementations ;-)
