I found it

I found the problem and corrected it.  The system had lost all vacuum pressure, so I re-configured to the PCV line and have great vacuum. Ironically, my gas mileage sucked because the vacuum line didn't.  Looks like I am on pace for 23-24 mpg in the city on this tank - and I only corrected the problem in the past 30 miles or so.  We'll see.