(b)(4).The sample was returned for evaluation.A visual exam was performed and it was observed that the threaded metal ring used to secure the cartridge into the handle was missing.The cartridge could not be seated safely and securely into the truled handle.The complaint has been confirmed.The defective condition could be the result of two scenarios.The first, over torquing (tightening) of the truled cartridge threaded retaining ring.The second, dropping the truled cartridge on a hard surface and dislodging the retainer ring.While a definitive reason for either of these scenarios cannot be assigned with the information provided, it should be noted that tightening of the threaded truled cartridge can be easily achieved by using reasonable hand force, and reasonable care should be taken to ensure the battery cartridges are not dropped.A conclusion code could not be chosen as the complaint was confirmed; however, a root cause could not be established.
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