With the exception of the useful/interesting refueling information provided by Waldo this entire thread is OCD. Unless you are competing in the 500/600 "club" contest who cares if the tank is 13.5 vs 14.1? That amounts to ~27 miles for the majority of us.
Fill your tank with "no more than two automatic click-offs" (as stated in the owner's manual) when your FFH's fuel gauge indicates 1/8 - 1/4 tank left and enjoy driving your FFH.
Interesting you took the two clicks out of context. Here is the whole Paragraph on determining fuel economy.
"Filling the Tank For consistent results when filling the fuel tank: •
Turn the ignition off before fueling; an inaccurate reading results if the engine is left running. •
Use the same fill rate (low-medium-high) each time the tank is filled. •
Allow no more than two automatic click-offs when filling. Results are most accurate when the filling method is consistent."
Looks like I followed FORD's recommendations close enough.