well the gravity cheat mode could alter the same parameters in the game.
what i did was extract the 2a49d4edce33edfed090c978dbc10d2c.xml out of the data.gob and open it in notepad.
the settings are pretty self explanatory. i changed them and put the 2a49d4edce33edfed090c978dbc10d2c.xml back into the rugby08 folder.
it only works for standard games though, not tournament games and only affects place kicking, not general play kicking.