They taped 5 more shows the following day (as normal), THEN they went and tweaked the board with 5 different patterns and a slightly slower speed. CBS/Carruthers actually didn't overhaul the programming until 13 more weeks had passed, presumably to see if the ratings would hold up before spending the money to completely reconfigure the board.
I hadn't heard that before. Were they thinking they might be cancelled?
Just to give a timeline on the board patterns:
--Larson aired 6/8 and 6/11/84
--New slower patterns started 6/20/84
--Another group of 5, faster patterns started 7/31/84
--overhauled group of 30-odd patterns started 9/17/84, start of show's second year