Cadillac knows there is a problem because they have changed the design twice. I think head bolts are longer now for one change.
Mine didnt go untill about 105,000 mi.
People & companies make mistakes. Its nothing to get upset about untill it gets into your packet. Then it tends to piss you off. Ben there, done that & got the bill.
If you dont get hit by lightning maby you should play the lotto. Your luck has to change.