I can't check to see how much a tire rotates because i pulled it back out, if you could how far you can your rear drive shaft with trans in neutaral that would help. I've been trying to get ahold of aussie locker themselves but right now they just have wimmins there and they don't know.
EDIT: just got off the phone with aussielocker and they said that it was the normal operation of the locker.
so for anybody who searches and finds this thread EXTRA MOVEMENT IS NORMAL. The feeleing of extra backlash is normal it is the locker rotating into contact with the crosss pin.
