I put a volt meter on the battery leads after taking it off the tender and was sitting at 13.4v. Started up and watched as the battery slowly discharged. The revs didn't make any difference. So I started tracing wiring and found the culprit. A 4 way connector that seems to feed to and from the regulator and alternator, wrapped in black tape. Under the tape I found the connector was melted through, (old damage) and the PO had cut one of the yellow wires where the connector had burned, and had stripped the wire and twisted/black taped together. Wire was corroded so I stripped back and found good copper, twisted and soldered the connection and heat shrinked it. I went ahead and cut out the connector and did the same for the other three wires. (another yellow, a black/yellow and a brown) After this, I started it up and it's charging again! I haven't looked at the wiring chart (left it at work after printing it out) but I'm pretty sure these wires lead to and from the alternator and regulator.
I was able to find the relay for the coil mod at Autozone, but they looked at me like I had one eye when I asked about the pigtail. But across the street at Carquest, they had the pigtail. So, I'll be doing that mod in the next few days. Thanks everyone for the advice and suggestions!