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IOEC here as well. I have always lashed them cold too.

Me thinks that the Intake Opening, Exhaust closing is backwards I think you want to set the intake valve went he exhaust valve just starts to open amd then rotate the motor over until the intake valve opens all the way and starts to close (up to half way closed)and then set the exhaust valve lash Do this cold and then check two or three cylinders when warmed up to see what the differences are on your motor

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)