Who didn't recommend building back up the journal. With a good shop there is nothing wrong with this...remember the bearing never touches the crank journal...
I'd find a shop that does the larger diesels and talk the them. It's a cool process I've seen done once. They heat up the journal then spray on some powdered metal. then grind it down.
Those cranks and weights are factory balanced, you might have more trouble finding someone to do that that build up the journal.
Good Luck,
Rob