hello all. i am replacing my ring and pinion and i cant seem to find any specs on setting up the dif. does anyone know what backlash (back and forth movement when holding pinion gear and moving ring gear) i should look for when setting up the ring gear on the pinion gear? i dont want to just look at the contact pattern. i will feel better about this installation when i get a good backlash measurement from my dial indicator....

thanks all.