Cummins Spinner question

While installing my Cummins spinner I have the holes drilled and am having trouble getting the deburing done cleanly. I have tried several kinds of deburing tools but the metal is so soft the burs kind of mush over out of the way. I also tried sandpaper and scotchbrite with mixed results. Has any body else had this opportunity to learn or am I just being to picky? Thanks in advance!

yeap

I did the same, I used a normal deburing tool lightly and then sanded down the entire spinner, then emery cloth, then super fine sandpaper, then buffing pads and finally polishing compounds. Turned out beautifully.