So I got mine off yesterday and did things a little differently.
I grinded both heads off and punched out the dowel that they connected.
It was in there tight and it goes back in just as tight. So both sides of the knuckle are perfectly flat and when punched reassembled it's just as flat.
What I'm planning on doing once my bushings get here is to reassemble it and have a few welds done on it. This should eliminate any concern with it ever backing out. Then I'll grind it off and make it look pretty. Then I'll cover it with some paint to protect from rust.
Does this make sense or am I missing something? I'll get some pics up once it's all said and done.