a pair of biasing mean stretched between {TAIL ~ the corresponding sleeves} and {HEAD ~ the fitting member} to bias said other movable shaft toward said one shaft 
a pair of biasing mean stretched between { TAIL ~ the corresponding sleeves } and { HEAD ~ the fitting member } to bias said other movable shaft toward said one shaft
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH