I think my DONOR is going to need a little TLC or replacement of the lug...
I would NOT want to try to get that out of a fresh epoxy bedding!
You could try having it ground, but are probably better off trying to pick up a used factory lug, cheap, from guys that swap out to aftermarket lugs. Or check
www.brownells.com for a good selection of various shapes, sizes, and thicknesses.