A method 1, including advancing the combined tool and retainer spring within the tube to engage the spring transition with the interior diameter of the tube and subsequently rotating the combined tool and {HEAD ~ retainer spring} to advance {TAIL ~ the large diameter section} of the retainer spring into the tube 
to advance
A method 1 , including advancing the combined tool and retainer spring within the tube to engage the spring transition with the interior diameter of the tube and subsequently rotating the combined tool and { HEAD ~ retainer spring } to advance { TAIL ~ the large diameter section } of the retainer spring into the tube
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