An engagement plate 68 has a pair of {HEAD ~ throughholes} 70, 72 to receive {TAIL ~ the larger diameter portion} of rods 36, 38 
to receive
An engagement plate 68 has a pair of { HEAD ~ throughholes } 70 , 72 to receive { TAIL ~ the larger diameter portion } of rods 36 , 38
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH