A U shaped metal spring is disposed over the solid shaft adjacent an outboard end of the tubular shaft with opposite legs of {HEAD ~ the spring} in {TAIL ~ sliding engagement} on corresponding flat sides of the solid shaft 
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A U shaped metal spring is disposed over the solid shaft adjacent an outboard end of the tubular shaft with opposite legs of { HEAD ~ the spring } in { TAIL ~ sliding engagement } on corresponding flat sides of the solid shaft
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH