Slant crankshaft damper and pulleys

Interesting on the caulk damper filler idea, Bill. The material used should have a specific density and durometer level. The rubber is matched intentionally with the ring weight and diameter to damp out a specific range of frequencies of axial vibrations, and changing the filler material to something else moves that damping frequency range somewhat. So my thought is that possibly using the PE caulk filler will make it not work right as a damper for this engine.