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