I have torn into many Sterling 10.25 rear ends. But I have never had one fight me like this. I beat the ever loving snot out of it and it would not budge. I even damaged the hub and flange. The bad thing is I had both shafts out a few weeks ago when I did the brakes. I finally ran out of time and had to stop for the day. Is there a trick I am missing or something I am not thinking of that can keep such a tight grip on that shaft?