Got a Dremel with an 80 grit abrasive "flap wheel"?
Smooth out the divots and scars with one of those.
I have seen that, and worse, before, in my rebuilding of LCA's.
But then i have always replaced bushings with the stock type metal sleeve, and rubber bushing.
Ain't got a clue what this guys delrin bushing is anyway.
What makes it better than a factory stock bushing?
Just my 2 cents on the subject.