Additional/updated information was added to reflect the device being returned to the manufacturer for evaluation, and subsequent testing verified the complaint.However, the underlying cause could not be determined.Per the initial evaluation, the tubing was broken around the weld at the bottom rear of the side frame.An expanded evaluation was performed.The expanded evaluation report confirmed that the lower frame tubing was broken below the weld to the upright.Additionally, corrosion was observed inside of the tubing.
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