Drewps! She's running right; it was the floats!
I tried the smaller main jets and that made no difference, so I switched back to the bigger ones.
First, I was flooding a bit. Second, the small tabs that hold the floats against the mounting posts were both bent and not making contact like they should. These are the little tabs that prevent the floats from "falling" too low when they are right-side up. I bent the little tabs with pliers and adjusted the height to 26mm from below the gasket, or 24mm from the lip on the edge of the bowl.
It idles great and I can rev smoothly at very low rpms. So, I put my game face on and decided to try and ride it. Good thing I have a long driveway! I didn't dump it, but wow it took off fast. Are you supposed to ride the clutch a bit for a smooth take off? Even at low rpms the thing pulls hard.
I am sure I still need a synch, but I am content for now!