I have a question about case depth/hardness on the journals.
My company makes Turbos. For durability purposes, on the turbine wheel shaft we harden the diameter so that after final grinding we have a specific hardness and case depth.
By removing so much material from the mains, are you concerned you may have ground off the harness band from the original manufacturing process? By chance did you have the hardness tested before or after the machine shop work ?