The returned adjustment driver was evaluated.The handle is starting to unthread from the shaft; the complaint is confirmed.A review of the manufacturing records did not identify any issues which would have contributed to this event.The labeling was reviewed and found to contain specific instructions regarding screw removal: a screw remover is to be used, not the adjustment driver.The threads on the screw remover are opposite those on the adjustment driver so that the handle will not separate from the shaft during screw removal.Therefore, this event has been determined to have been caused by the user not following labeling instructions.
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