I just installed the latest version of this contrib and included the upgraded file by dlpuma and it works great EXCEPT that all my shipping rates are too high.
After researching I discovered that although most shippers don't use a Zone 1 and begin local shipping with Zone 2, the buildfedexdata.php builds rate tables begining with Zone 1 and populates the tables with the 'rate.csv which all begin with Zone 2. Therefore each zone is using the rates for the next higher zone.
-Mike