Head gasket failure again

So long story short(well semi short). I bought my truck way back in August now previous owner did a head gasket roughly forty Thousand kms before I bought the truck and with in 24 hours of owing I blew the gasket so after a couple months of denial, I replaced it in December took my head to a machine shop local and they said it was blown on 4-5 5-6 steam port and they took some off, they didn't specify. I put it all together with a oe Cummins gasket and after 3 weeks of driving it under boost and high rpm I head gasket chatter and coolant blowing everywhere. The block was straight when I had the head off. What's my best option ie just replace the gasket, replace the head with a known good one. I'm leaning towards just replacing the head but want your guys opinion. And yes the truck is tune and deleted and it has a mini max v1 and the truck has 411,000k on it

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