Is the noise just there when turning the wheels while the truck isn't moving? Or is it there when driving too?
The reason I ask is because when sitting still, mine will clunk a bit from one of the front spring shackles shifting when I turn the wheels. Of course I don't notice it when driving and with the manual steering, there was not much way to turn the wheels smoothly when sitting still.
Try to regrease all the shackle fittings and see if the noise goes away.
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