TJP,

OK, this makes good sense. I did find the procedure with the rotational torque that I had read before (as described in my response to Moparteacher). As mentioned, given the age of the box and that I have everything else apart, it seems diving into or swapping the box is the best path for the long term. Thanks for all of the input! I am definitely going to try to assess by hand how much play is in the box as it sits today.