Even if the stopper becomes slack when the cover is closed, due to {HEAD ~ the action} of {TAIL ~ the biasing member}, this slack portion is received within the receiving portion 
of
Even if the stopper becomes slack when the cover is closed , due to { HEAD ~ the action } of { TAIL ~ the biasing member } , this slack portion is received within the receiving portion
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 TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH