Back in the 'Burg I stopped for some lunch and started up for the short ride home and she sputtered out and wouldn't start back up.
The problem was almost too simple. The vacum tube for the fuel petcock had come off and the carb was bone dry. I was able to squeeze my chunky fingers in just enough to get the tube back on and she started right up.
Tonight's project: trim the worn end of the petcock vacum tube so it fits nice & snug.