Forgeline can recoat the centers, I've had that done once. It wasn't too expensive as I recall, but it's been a few years. (around $100 per wheel, but that also included return shipping)
I've also reassembled my wheels a few times. I believe that I remember Forgeline recommending to replace the bolts/nuts after 3 torque cycles. I have not done that yet, but would probably do so next time I take them apart.
I just found an old email from them. The torque specs they sent me are:
"The thru bolts are 26 ft/lbs and the blind bolts are 25 ft/lbs"
Finally, replacing an outer rim half is not hard, and for what you paid you would still come out ahead. Probably easier in the big picture than trying to repair them.
Good luck!