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I would assume so also Frank. Could you tell me what Johnson manual you got that from? I haven’t noticed it before. I know when engine overheat badly they lose their ring tension. Never thought of a way to measure it, just usually have to change things (pistons, bore out of round, etc.) because of other problems on bigger engines. In the old days labor charges were not a problem ( like we are today with our own old motors ). They just took them apart, checked everything, decarboned and put them back together provided everything was in spec. I like the one that shows knocking the piston back round again after the wrist pin has been installed if necessary.
Dan in TN