UPDATE: Hello Mr. Gasket...

Took Maxi for a ride today, and whenever the car was stopped, whisps of smoke floated out from under the hood.  It appears the valve cover gaskets have finally given out.  Oil is seeping out and onto hot surfaces.  I just placed an order for a set of gaskets.  I have to examine my installation technique, as I have never had to take a valve cover off of an engine that was actually IN a car!  I think the driver side will be harder... Watch this space for updates...