I've read several references to a ticking noise as being indicative of a failing wrist pin bearing.I'm running a dax 70cc that has a distinct ticking nose at idle.Reminds me of valve clatter.sort of a series of three ticks with a slight pause between (tick tick tick---tick tick tick)Was doing this right out of the box and I now have about 600mi. on it.Runs great with zero vibration.I'm wondering if I should just go ahead and replace the bearing or could this be something else.Thanks,Ron