I've been having a hard time keeping my toe aligned lately and I can't seem to figure out why.

Last alignment I've had done my toe was .30 and .29 on left and right sides respectively.

Thefactory sepcs for toe are .13-.21 How much more wear should I see if my toe stays at .29 and .30? I understand the wear pattern associated with the toe, I'm just trying to grasp some real world numbers and wear mileage.