I originally intended to use 8mm bore rubber air hose to provide a vibration isolation but when I tightened up the through bolts it was virtually solid. I turned down 2 spacers from 10mm aluminium bar, 4mm longer than the mounting eye tubes and then bored them 6mm. The void between the ID of the mounting eye tubes and the spacers will be filled with clear silicone bathroom sealer to provide the right degree of elasticity.
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