Lyman,
Are you a metallurgist by background? The problem is complex. There are many processing steps from the time the alloy produced until the final part arrives at engine assembly. Each step must be accomplished within the defined parameters. You make it seem like it is simplistic, it is not. I did post graduate metallurgical failure work on the sudden failures of huge oil storage tanks which turned out to be hydrogen embrittlement, not what was expected at the time. I know how complex these thing can be. Don't lecture me on being in the dark or in the shadows... Good failure analysis and failure problem solutions depends on good first hand data, not on outsider speculation or imagination...
TD