Been there ,had that problem , did exactly what Martin did , BUT fit nuts to OUTSIDE of pulley to ensure they do not catch & use button head machine screws to again reduce chance of catching & small dab of loctite .
I had my crank sprocket chatter & shear the woodruff key off . Crank bolt was not correctly tightened NOR was the diamond wash installed between damper & sprocket ! ! ! ! ! .
Result two bent valves , stuffed hydraulic followers & lots of fun timing everything up again ( HA HA HA HA HA ) . Have also heard of aux belt coming off & getting trapped by cam belt with bad results for owner
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To stupidity & beyond
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