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Marvin blueprints every part of every engine he builds. Valvesprings are massaged to eliminate sharp edges that cause friction. Then, valve springs are coated with Dow Corning Dry Film No. 321 to eliminate friction during initial start-up. Dow Corning's 321 Dry Film lube is a good lubrication foundation for startup. Then, Marvin coats it all with Comp Cams assembly lube during assembly.