Ahhhhhh, thanks to everyone. I believe the battery disconnect switch and relay were the issue. I had shut that off since it was in storage right here on the property. I ran out to start and lubricate everything just before the nasty cold weather had come in, unplugged it from shore power and killed the switch. So while sitting for 6 weeks or so with the switch off, the batteries were still registering 2/3 full. Here's the other shoe that fell. When I tried to start it, I had switched on the disconnect, and hit the button to start and didn't hear it cranking. This time I held the switch down and there was a delay for about 5 seconds until it started cranking. It started, ran it for 15 minutes and batteries read full. Job done!
BTW, One of the things I absolutely hate about the FR Georgetown is that they have a ton of in-line fuses and not one of them are marked, and there's no documentation either. Infuriating when trying to debug something. So, when digging around the generator, I found a 25 amp in-line fuse TUCKED BEHIND the cables in a black holder next to the black housing! It was not blown, but who knows it was there? I attached a picture after I disconnected the unprotected quick connects (which also had very little grip to each other, and ripe for corrosion) and reconnected on the other side of the main 12V line so there's access to it.
Thanks all. I must say, got better response here than from the dealer!