They try to repeat the exact same process with every vehicle they test. Some vehicles will stop the fill early until they drain the tube so would have an unfair advantage on the numbers unless they did the top off. It is problematic for the testing process that the Maverick has the unique gas...
I've ordered the same basic unit without the blackout package. My dealer has indicated that my build date is Dec 9th but I don't have anything from Ford directly yet.