3.1 motor ?

i have 92 z24 and it has blowen head gasket so i am rebuilding the whole motor but the ? i have is in the hanz manual it says the warpage limit is 5 thousandths of an inch and mine are up to 9 thousandths in spots. can they be machined down yet or are they junk?

i have 92 z24 and it has blowen head gasket so i am rebuilding the whole motor but the ? i have is in the hanz manual it says the warpage limit is 5 thousandths of an inch and mine are up to 9 thousandths in spots. can they be machined down yet or are they junk?


Anything above specs would be junk