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I did a compression test and was only getting 30 psi. I found that my piston head has insufficient lubrication and/or overheating. I posted pictures to get any thoughts on replacing bore or just have it hone. I know my piston head definitely needs replaced.

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      I'm 99.9% sure head gasket is blown.
      Don't have coolant in oil. That a good thing. But think coolant is getting in combustion chamber. 
      I did compression test.
      Got 120psi walked away. Came back to 105psi 15 minutes later.
      How hard is it to replace?
      https://youtu.be/N31mOtOPuKI?si=nSnuF4-weRU2T10t
      Advise?
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