Doesn't hurt if you use a few washers (total thickness about 1.5mm) with a wide enough inner diameter to fit over the outdrive portion of the diff half to serve as cut / grind stop. I had to use a thin (metal) cut off wheel set to about medium to get enough speed on the wheel to cut without generating too much heat. If it heats up too much the bushing will fall out and disfigure the diff half.

Good luck.