I don't know the answer to your question; but, if anything requires levering against the IP don't do it. With any freeze plus install I put them in the freezer overnight and don't remove it until the last second possible before install. The freezer reduces the OD of the plug slightly and helps the install a small amount. If the block surface is pitted where it seals the plug, clean it well and sparingly use a sealer like Permatex Aviation Form-a-Gasket.

Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer