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It wasn’t resolved. Maybe less common than older models, but it still happens on newer ones. Yes there’s lot of piston slap diversity - some have piston slap, some don’t, some worse than others, some were repaired under warranty, some have had engines or pistons replaced since new, some shops install updated pistons, coated pistons or knurl the pistons when doing a headgasket job, at least two shop owners on here do it and others do as well…etc.