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Old 12-27-2020, 11:57 AM   #4
Flathead
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Join Date: May 2010
Location: Southern Maine
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Default Re: Mode A Piston expander/ knurling tool to Buy

Have you taken the engine apart yet? It could be a cracked or scored piston that would need replacement. If it has the original split skirts be sure the were all facing the correct way.
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