Hey Matt
I used a Scotch-Brite EXL Deburring Wheel, Silicon Carbide,6000 rpm, 6 Diameter, 1 Arbor, 8S Fine Grit
https://www.amazon.com/gp/product/B004VTQOII/?tag=atomicindus08-20
It works wonders on almost any metal surface.
WEAR A MASK! You don't want to breath the fibers that come off the...