360 LA getting oil in #3 cylinder.

pittsburghracer said

If you clean your block and heads with laquire thinner you won’t need the copper coat. Did you put a straightedge on the block?

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Yes. The worst place on the block now is .0015" low. I wiped the cylinder walls with thin layer of motor oil, turned the crank, did it again several times until back at start position. Then cleaned deck twice with acetone.